fix wd-test test coverage reporting

[anonrig]

An attempt to fix wd-test coverage on codecov. Current state can be found from: https://app.codecov.io/gh/cloudflare/workerd

Blocked by: bazelbuild/bazel#28310

[codspeed-hq]

Merging this PR will not alter performance

✅ 68 untouched benchmarks
⏩ 129 skipped benchmarks¹

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_{Comparing yagiz/fix-wd-test-test-coverage (20b679d) with main (184ce44)}

Footnotes

1. 129 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.14%. Comparing base (184ce44) to head (20b679d).

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #5881       +/-   ##
===========================================
+ Coverage   68.10%   68.14%    +0.04%     
===========================================
  Files          29      418      +389     
  Lines        2593   106796   +104203     
  Branches       15    17902    +17887     
===========================================
+ Hits         1766    72780    +71014     
- Misses        827    23297    +22470     
- Partials        0    10719    +10719     

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