feat(ta-gql): handle receiving all branches filter

[joseph-sentry]

add all branches special case for TA results branch filter in new TA
functionality

[sentry-autofix]

🚨 Sentry detected 1 potential issue in your recent changes 🚨

Lower risk findings

• Line 217, graphql_api/types/test_analytics/test_analytics.py

  • Unvalidated term input to pl.col("name").str.contains(term) can cause regex parsing errors.
  • This may cause issues similar to: #6538776877

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[codecov-notifications]

Codecov Report

Attention: Patch coverage is 84.37500% with 10 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
utils/test_results.py	79.59%	10 Missing ⚠️

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[codecov]

Codecov Report

Attention: Patch coverage is 84.37500% with 10 lines in your changes missing coverage. Please review.

Project coverage is 96.29%. Comparing base (83ae26e) to head (edcfdaa).

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
utils/test_results.py	79.59%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1284      +/-   ##
==========================================
- Coverage   96.31%   96.29%   -0.03%     
==========================================
  Files         488      488              
  Lines       16927    16977      +50     
==========================================
+ Hits        16304    16348      +44     
- Misses        623      629       +6     

Flag	Coverage Δ
unit	96.29% <84.37%> (-0.03%)	⬇️

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