perf(worker): Eagerly load repository for flake processing

[sentry]

Fixes WORKER-Y8Y. The issue was that: Missing .select_related() on ReportSession and individual flake.save() calls cause N+1 queries, leading to task timeouts.

• Added .select_related("report__commit__repository") to the report query in _fetch_reports_for_commit.
• This change optimizes database access by eagerly loading the related repository object, preventing potential N+1 queries when processing flakes.

This fix was generated by Seer in Sentry, triggered automatically. 👁️ Run ID: 13552300

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Note

Low Risk
Low risk performance-only change that adjusts a Django queryset to prefetch related repository, reducing N+1 queries during flake processing.

Overview
Improves flake-processing performance by updating get_relevant_uploads() to eagerly load report__commit__repository via select_related(), avoiding repeated per-upload repository lookups and helping prevent worker timeouts.

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[sentry]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.25%. Comparing base (0ad8a0c) to head (f1ebd80).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #864   +/-   ##
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  Coverage   92.25%   92.25%           
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  Files        1307     1307           
  Lines       48017    48017           
  Branches     1636     1636           
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  Hits        44299    44299           
  Misses       3407     3407           
  Partials      311      311           

Flag	Coverage Δ
workerintegration	58.54% <ø> (ø)
workerunit	90.39% <ø> (ø)

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[codecov-notifications]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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