[FOLLOWUP][TASK] Doctrine: Migrate BackendUserAuthentication::getPagePermsClause

After the doctrine refactoring a hook is now not working anymore
as before

Relates: #75556
Resolves: #78313
Releases: master
Change-Id: I797a7ebbf1ec009339ba858d421552595b189998
Reviewed-on: https://review.typo3.org/50238


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Robert van Kammen <rvkammen@hotmail.com>
Tested-by: Robert van Kammen <rvkammen@hotmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>