Propagate match only in asset selection to reduce allocations when grouping

[nkolev92]

Bug

Related: NuGet/Home#12728

Description

The assets selection in restore tends to be 2 phase, group, and then select the frameworks you care about.
The grouping part never really uses the LockFileItem, the strings, the metadata etc. There's already some code that avoids actualizing and create the lock file items for that.
This PR takes that idea and applies to a lot more of places we might allocate unused strings.

This gets us about ~15MB on OrchardCore.
If you look at the traces, the difference is in TryLookup. There's a lot fewer allocations, since strings are not being actualized if they're not going to be needed.

Before:

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  1.1	   99,485,616
+ mscorlib.ni!System.Collections.Generic.Dictionary`2[System.__Canon,System.__Canon].Insert(System.__Canon, System.__Canon, Boolean)                                                                                     	  0.4	   37,982,336
+ nuget.packaging!ContentPropertyDefinition.TryLookup                                                                                                                                                                    	  0.3	   22,924,920
+ nuget.packaging!NuGet.ContentModel.ContentItem.get_Properties()                                                                                                                                                        	  0.2	   16,821,344
+ system.memory.ni!?                                                                                                                                                                                                     	  0.1	   11,678,544
+ clr!JIT_New                                                                                                                                                                                                            	  0.1	   10,078,472

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  1.1	   99,325,240
+ mscorlib.ni!System.Collections.Generic.Dictionary`2[System.__Canon,System.__Canon].Insert(System.__Canon, System.__Canon, Boolean)                                                                                     	  0.4	   36,625,432
+ nuget.packaging!ContentPropertyDefinition.TryLookup                                                                                                                                                                    	  0.2	   21,512,424
+ nuget.packaging!NuGet.ContentModel.ContentItem.get_Properties()                                                                                                                                                        	  0.2	   20,301,392
+ clr!JIT_New                                                                                                                                                                                                            	  0.1	   10,511,528
+ system.memory.ni!?                                                                                                                                                                                                     	  0.1	   10,374,464

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  1.0	   92,317,912
+ nuget.packaging!PatternExpression.Match                                                                                                                                                                                	  1.0	   92,317,912
 + nuget.packaging!ContentItemCollection.PopulateItemGroups                                                                                                                                                              	  0.6	   58,508,488
 + nuget.packaging!ContentItemCollection.FindItemsImplementation                                                                                                                                                         	  0.4	   33,809,424

After:

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  1.0	   88,885,968
+ mscorlib.ni!System.Collections.Generic.Dictionary`2[System.__Canon,System.__Canon].Insert(System.__Canon, System.__Canon, Boolean)                                                                                     	  0.4	   36,773,904
+ nuget.packaging!NuGet.ContentModel.ContentItem.get_Properties()                                                                                                                                                        	  0.2	   18,401,392
+ nuget.packaging!ContentPropertyDefinition.TryLookup                                                                                                                                                                    	  0.1	   12,331,104
+ system.memory.ni!?                                                                                                                                                                                                     	  0.1	   12,324,000
+ clr!JIT_New                                                                                                                                                                                                            	  0.1	    9,055,568

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  0.9	   82,424,088
+ mscorlib.ni!System.Collections.Generic.Dictionary`2[System.__Canon,System.__Canon].Insert(System.__Canon, System.__Canon, Boolean)                                                                                     	  0.4	   33,274,936
+ nuget.packaging!NuGet.ContentModel.ContentItem.get_Properties()                                                                                                                                                        	  0.2	   17,833,672
+ nuget.packaging!ContentPropertyDefinition.TryLookup                                                                                                                                                                    	  0.1	   11,798,680
+ clr!JIT_New                                                                                                                                                                                                            	  0.1	    9,822,448
+ system.memory.ni!?                                                                                                                                                                                                     	  0.1	    9,694,352

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  0.9	   81,275,080
+ mscorlib.ni!System.Collections.Generic.Dictionary`2[System.__Canon,System.__Canon].Insert(System.__Canon, System.__Canon, Boolean)                                                                                     	  0.4	   32,063,952
+ nuget.packaging!NuGet.ContentModel.ContentItem.get_Properties()                                                                                                                                                        	  0.2	   19,575,008
+ system.memory.ni!?                                                                                                                                                                                                     	  0.1	   11,047,056
+ nuget.packaging!ContentPropertyDefinition.TryLookup                                                                                                                                                                    	  0.1	    9,914,472
+ clr!JIT_New                                                                                                                                                                                                            	  0.1	    8,674,592

Name                                                                                                                                                                                                                     	Inc %	          Inc
 nuget.packaging!NuGet.ContentModel.Infrastructure.PatternExpression+TokenSegment.TryMatch(class NuGet.ContentModel.ContentItem&,class System.String,class System.Collections.Generic.IReadOnlyDictionary`2,int32,int32&)	  1.0	   92,817,256
+ mscorlib.ni!System.Collections.Generic.Dictionary`2[System.__Canon,System.__Canon].Insert(System.__Canon, System.__Canon, Boolean)                                                                                     	  0.4	   39,193,360
+ nuget.packaging!NuGet.ContentModel.ContentItem.get_Properties()                                                                                                                                                        	  0.2	   20,815,240
+ system.memory.ni!?                                                                                                                                                                                                     	  0.1	   12,366,792
+ nuget.packaging!ContentPropertyDefinition.TryLookup                                                                                                                                                                    	  0.1	   11,267,464
+ clr!JIT_New                                                                                                                                                                                                            	  0.1	    9,174,400

Microbenchmarks confirm this:

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
NJ	44.10 us	0.164 us	0.153 us	4.3335	0.1221	73.78 KB
MicrosoftBuildRuntime	66.96 us	0.285 us	0.267 us	8.9111	0.7324	151.6 KB
AllPackages	155,316.21 us	563.189 us	526.807 us	15250.0000	1750.0000	259587.62 KB

Match Only:

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
NJ	43.08 us	0.109 us	0.102 us	4.1504	0.1221	70.78 KB
MicrosoftBuildRuntime	65.93 us	0.315 us	0.280 us	8.4229	0.7324	142.8 KB
AllPackages	152,519.29 us	284.897 us	237.902 us	14250.0000	1500.0000	243837.9 KB

Note that from a microbenchmark perspective, the "grouping" step, is:

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
NJ	19.85 us	0.068 us	0.057 us	1.8311	-	31.27 KB
MicrosoftBuildRuntime	21.15 us	0.103 us	0.096 us	1.4648	0.0305	24.68 KB
AllPackages	68,242.99 us	423.168 us	395.832 us	5875.0000	250.0000	99537.28 KB

PR Checklist

• Meaningful title, helpful description and a linked NuGet/Home issue
• Added tests
• Link to an issue or pull request to update docs if this PR changes settings, environment variables, new feature, etc.