fix(graphql): add deprecated orderingDirection to ImpactedFilesFilters for backward compatibility

[sentry]

This PR addresses a GraphQLError where older clients were querying the impactedFiles field with filters: {orderingDirection: NAME}. The ImpactedFilesFilters input type was refactored to use a nested ordering: { direction, parameter } structure, causing these queries to fail.

To maintain backward compatibility for existing clients, this change introduces the following:

1. Schema Update: Added orderingDirection: OrderingDirection as a deprecated field to the ImpactedFilesFilters input type in apps/codecov-api/graphql_api/types/inputs/impacted_files_filters.graphql. This allows the GraphQL engine to accept the old field without error.
2. Interactor Logic: Modified the _apply_filters method in apps/codecov-api/compare/commands/compare/interactors/fetch_impacted_files.py to check for orderingDirection if the nested ordering.direction is not provided. When orderingDirection is used, the parameter is defaulted to FILE_NAME to match the expected behavior of the old query.

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Fixes API-EVZ

[thomasrockhu-codecov]

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Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...mmands/compare/interactors/fetch_impacted_files.py	80.00%	1 Missing ⚠️

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[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 91.61%. Comparing base (68c86d1) to head (d8da879).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...mmands/compare/interactors/fetch_impacted_files.py	80.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (80.00%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1982      +/-   ##
==========================================
- Coverage   91.61%   91.61%   -0.01%     
==========================================
  Files        1336     1336              
  Lines       53174    53177       +3     
  Branches     1647     1647              
==========================================
+ Hits        48715    48717       +2     
- Misses       4138     4139       +1     
  Partials      321      321              

Flag	Coverage Δ
apiunit	93.94% <80.00%> (-0.01%)	⬇️

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