[TASK] Remove limit in be_groups fields

With this change, there are no more restrictions
in TCA within the be_groups.

Resolves: #87967
Releases: master, 9.5
Change-Id: Ifc1cf2b41c15c43dd5a1e314c0cb0a418753455a
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60301


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>