[BUGFIX] Calculate correct cache identifier for cached SQL statement

BackendUtility::getPageForRootline() must use a more specific
cache identifier for the SQL statement in order to deliver correct
data.

Resolves: #90434
Releases: master, 9.5
Change-Id: I95cf77144773f0a2cd58b1dd72f3f818733cdc7e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63322


Tested-by: Wolfgang Klinger <wolfgang@wazum.com>
Tested-by: Christian Eßl <indy.essl@gmail.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Wolfgang Klinger <wolfgang@wazum.com>
Reviewed-by: Christian Eßl <indy.essl@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>