[TASK] Setting BE-debug appends fieldnames to labels

The description so far says fieldnames are prepended.

Resolves: #85507
Releases: master
Change-Id: I06fccdc2aee70a95e64cb14adccba0e24a22c1cb
Reviewed-on: https://review.typo3.org/57499


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Jörg Bösche <typo3@joergboesche.de>
Tested-by: Jörg Bösche <typo3@joergboesche.de>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Tested-by: Frank Naegler <frank.naegler@typo3.org>