[TASK] Enable phpstan InvalidUnaryOperationRule

Releases: master
Resolves: #90891
Change-Id: Ie0a00688422d7088816f80364e68cac7f7232950
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/64016


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>