fix(graphql): Add deprecated 'head'/'base' fields to ComponentComparison

[sentry]

This PR addresses issue API-ESM, where external API clients were encountering GraphQLError: Cannot query field 'head' on type 'ComponentComparison'. The root cause was identified as a mismatch between client queries and the GraphQL schema for the ComponentComparison type. While the schema provides headTotals and baseTotals, some clients were querying for head and base fields, which are present on other comparison types (e.g., FlagComparison) but not ComponentComparison). To provide backward compatibility and prevent breaking existing external integrations, this change introduces head and base fields to the ComponentComparison GraphQL type. These fields are marked as @deprecated in the schema and their resolvers are implemented to delegate to the existing headTotals and baseTotals fields, respectively. This allows older clients to continue functioning while encouraging migration to the correct field names.

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Fixes API-ESM

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Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...types/component_comparison/component_comparison.py	66.66%	2 Missing ⚠️

❌ Your patch check has failed because the patch coverage (66.66%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

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[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.83%. Comparing base (d8942db) to head (93a1667).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...types/component_comparison/component_comparison.py	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1872      +/-   ##
==========================================
- Coverage   91.83%   91.83%   -0.01%     
==========================================
  Files        1332     1332              
  Lines       51830    51836       +6     
  Branches     1647     1647              
==========================================
+ Hits        47598    47602       +4     
- Misses       3911     3913       +2     
  Partials      321      321              

Flag	Coverage Δ
apiunit	94.74% <66.66%> (-0.01%)	⬇️

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