[TASK] Implement runtime_cache for DataHandler->recUpdateAccessCache

Removes "public internal" cache variable and implements runtime_cache
instead.

Change-Id: I8262a699d60db9e9eb04f23c3f7da78ef7e1149d
Resolves: #79071
Releases: master
Reviewed-on: https://review.typo3.org/51019


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Tested-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>