[TASK] Follow-up: Hard-coded labels in file collections

Change-Id: If2d567f2e381e0cdfdaf883cd4452807d88f44e2
Related: #52727
Resolves: #53532
Releases: 6.2
Reviewed-on: https://review.typo3.org/25282
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters