[!!!][TASK] Use multiple translation files by default

Resolves: #87009
Releases: master
Change-Id: I533ccf9959f0e9e3a485a3317af8befc8befeb98
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60593


Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Björn Jacob <bjoern.jacob@tritum.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Ralf Zimmermann <ralf.zimmermann@tritum.de>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Björn Jacob <bjoern.jacob@tritum.de>
Reviewed-by: Ralf Zimmermann <ralf.zimmermann@tritum.de>