Refine CRUD functional test to work with actual form structure

Boris Doesborgrequested to merge
issue/path_file-3532777:phpunit into 2.0.x
  • Fix file entity creation with proper ownership
  • Login user before creating test file to avoid access issues
  • Use dynamic field detection for file field
  • Simplify form submission process
  • Add proper debugging for form validation errors
  • Test now covers complete CRUD workflow: Create, Read, Update, Delete
  • All tests now pass successfully (2 tests, 32 assertions)

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