fix: double space in wrapped sequence diagram messages

[Yash-Singh1]

📑 Summary

Some sequence diagrams that had multiple spaces in them and were wrapped, explicitly set wrapping in the config or message and/or a message inside a break statement, resulted in rendering errors since the words weren't split correctly resulting in mermaid trying to calculate the text dimensions of an empty string.

Resolves #4298

Repro:

        sequenceDiagram
break Get the Salesforce  Account
AWS->>LamdaGetAccount : GetAccount
LamdaGetAccount->>Salesforce: sd
Salesforce->>LamdaGetAccount: ds
end

Resolves #5617

Repro:

sequenceDiagram

actor User as User/Browser
participant API1 as api.example.com
participant API2 as contacts.example.com

User ->> API1 :wrap: Send Access Token As Cookies  With Different Request
 

📏 Design Decisions

Simple one-liner fix to filter out empty strings in word split in wrapLabel.

📋 Tasks

Make sure you

• 📖 have read the contribution guidelines
• 💻 have added necessary unit/e2e tests.
• 📓 have added documentation. Make sure MERMAID_RELEASE_VERSION is used for all new features.
• 🔖 targeted develop branch

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 5.86%. Comparing base (b1b480a) to head (99644ba).

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #5649   +/-   ##
=======================================
  Coverage     5.86%   5.86%           
=======================================
  Files          274     273    -1     
  Lines        41087   41076   -11     
  Branches       488     512   +24     
=======================================
  Hits          2408    2408           
+ Misses       38679   38668   -11     

Flag	Coverage Δ
unit	5.86% <0.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
packages/mermaid/src/utils.ts	41.71% <0.00%> (ø)

... and 1 file with indirect coverage changes

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Jul 17, 2024, 4:43 AM