[cs-fixer] Fix files to lookup
Remove unused uses
[cs-fixer] Centralize configuration in a single file
Merge branch 'hotfix/#5983-cs-fixer'

Close #5983
Collection Input Filter fix messages
Remove trailing spaces
Fix for weird test trying to validate a CollectionInputFilter with a Input instead of a InputFilter
Remove unecessary test, and fix for validation groups on collections
fix for validation groups on collections
Old behavior failure test case (nested collections)
Remove dead code
Fix for direct property access
Remove trailing spaces
Revert chmod