[BUGFIX] Allow to modify skipGroupAccessCheck in new PSR-14 event

With TYPO3 v13.0 the new BeforePageIsRetrievedEvent was
added, and the previous hook was removed. This way, it is not
possible to manipulate $disableGroupAccessCheck anymore.

This change re-adds the possibility to modify this flag in
an EventListener.

Resolves: #103855
Related: #102806
Releases: main
Change-Id: Ic5fbd6c6932b7da5f01592126f1c406d4084103b
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/84291


Tested-by: Rafael Kähm <rafael.kaehm@dkd.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Rafael Kähm <rafael.kaehm@dkd.de>
Reviewed-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>