fix(worker): Handle TorngitServerUnreachableError during commit update

[sentry]

Fixes WORKER-Y7K. The issue was that: Bitbucket API read timeout during ancestor tree fetch caused unhandled TorngitServerUnreachableError due to insufficient timeout resilience.

• Imported TorngitServerUnreachableError exception.
• Added error handling for TorngitServerUnreachableError when updating commit information.
• Logs a warning and returns False if the Git provider is unreachable during the commit update process.

This fix was generated by Seer in Sentry, triggered automatically. 👁️ Run ID: 13322269

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Note

Low Risk
Low risk: small change limited to exception handling and logging when fetching commit details from a Git provider times out or is unreachable.

Overview
Prevents unhandled failures during commit metadata backfill by catching TorngitServerUnreachableError in possibly_update_commit_from_provider_info.

When the provider can’t be reached, the worker now logs a warning (with stack trace) and returns False instead of erroring out.

^{Reviewed by Cursor Bugbot for commit 99df8e5. Bugbot is set up for automated code reviews on this repo. Configure here.}

[sentry]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.25%. Comparing base (8c332b1) to head (99df8e5).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
apps/worker/services/repository.py	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #815      +/-   ##
==========================================
- Coverage   92.25%   92.25%   -0.01%     
==========================================
  Files        1306     1306              
  Lines       48004    48007       +3     
  Branches     1636     1636              
==========================================
+ Hits        44286    44287       +1     
- Misses       3407     3409       +2     
  Partials      311      311              

Flag	Coverage Δ
workerintegration	58.57% <33.33%> (-0.01%)	⬇️
workerunit	90.37% <0.00%> (-0.02%)	⬇️

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Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
apps/worker/services/repository.py	33.33%	2 Missing ⚠️

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