[BUGFIX] Change finisher override display behavior

Show all possible finisher options which can be overridden within the
form plugin even if if they are not part of a form definition.

Resolves: #86635
Resolves: #85033
Releases: master, 9.5
Change-Id: Ie5ce8e2fb97e2c3fde92cbcb405d77818d1c7bda
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60577


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Mathias Brodala <mbrodala@pagemachine.de>
Tested-by: Susanne Moog <look@susi.dev>
Reviewed-by: Mathias Brodala <mbrodala@pagemachine.de>
Reviewed-by: Susanne Moog <look@susi.dev>