Improve performance for maximum file size push rule check

Summary

• The current implementation for enforcing maximum file size push requires a complete graph walk
  • https://gitlab.com/gitlab-org/gitlab/-/blob/798e59dea3d9049475ba93a68fffc991b93da5cb/lib/gitlab/checks/file_size_check/any_oversized_blobs.rb#L14
  • This can be slow for a large repository

Improvements

• We could use a efficient method which considers only the quarantine directory first
  • https://gitlab.com/gitlab-org/gitlab/-/blob/798e59dea3d9049475ba93a68fffc991b93da5cb/lib/gitlab/checks/file_size_check/hook_environment_aware_any_oversized_blobs.rb#L6

Risks

Involved components

Optional: Intended side effects

Optional: Missing test coverage