chore(ci): Add required checks job for lint cocoapods specs

[philprime]

📜 Description

Implemented the migration of the Lint CocoaPods Specs workflow (lint-cocoapods-specs.yml) from on.pull_request.paths filtering to a files-changed job using dorny/paths-filter. This includes:

• Adding a new file filter run_lint_cocoapods_Specs_for_prs in .github/file-filters.yml.
• Removing the paths filter from the workflow's on.pull_request.
• Modifying the workflow to include a files-changed job, making the main lint_cocoapods_specs job conditional, and adding a lint_cocoapods_Specs-required-check job for required checks.
  This ensures the workflow runs conditionally for PRs based on file changes, but always for schedule/workflow_dispatch events, and provides a reliable required check.

💡 Motivation and Context

This change is part of a larger effort to migrate all workflows using on.[event].paths filtering to use a files-changed job with dorny/paths-filter. This approach allows for more robust required checks by introducing a dedicated job that always runs and serves as the main indicator for branch protection rules.

Fixes #5959.

See #5951 for full context on the migration strategy and #5893 for an example implementation.

💚 How did you test it?

The CI changes will be validated by observing the workflow runs on this pull request.

📝 Checklist

You have to check all boxes before merging:

• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• I updated the wizard if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

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#skip-changelog

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.727%. Comparing base (073562b) to head (97f968d).
⚠️ Report is 4 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@              Coverage Diff              @@
##              main     #6007       +/-   ##
=============================================
+ Coverage   86.672%   86.727%   +0.054%     
=============================================
  Files          424       424               
  Lines        36714     36714               
  Branches     17363     17368        +5     
=============================================
+ Hits         31821     31841       +20     
+ Misses        4846      4827       -19     
+ Partials        47        46        -1     

see 8 files with indirect coverage changes

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[itaybre]

lgtm