fix(propagator-jaeger): 0-pad span-id to match 16-symbol validation

[nikolaylagutko]

Which problem is this PR solving?

0-pad Span ID received from Carrier to 16-characters format according to Jaeger Propagation Format

Short description of the changes

Type of change

Please delete options that are not relevant.

• [*] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [*] Can be verified by using Jaeger Python Client to generate parent spans. Sometimes Python library generates 15-character-length Span ID so OpenTelemetry doesn't create reference to Parent Span

Checklist:

• [*] Followed the style guidelines of this project
• [*] Unit tests have been added
• [-] Documentation has been updated

[linux-foundation-easycla]

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[codecov]

Codecov Report

Merging #2694 (9aa1f1e) into main (fb2031b) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #2694   +/-   ##
=======================================
  Coverage   92.57%   92.57%           
=======================================
  Files         151      151           
  Lines        5276     5277    +1     
  Branches     1116     1116           
=======================================
+ Hits         4884     4885    +1     
  Misses        392      392           

Impacted Files	Coverage Δ
...elemetry-propagator-jaeger/src/JaegerPropagator.ts	100.00% <100.00%> (ø)