[TASK] Do not rely on sys_page when storing cached data in cObj

ContentObject renderer has an unnecessary call to $TSFE->sys_page
for calling a static method in a non-static way.

It should directly use the caching framework instead.

Resolves: #80482
Releases: master
Change-Id: Iaa93de3c1e98cf5e639605dcf49cb5715a28b5d7
Reviewed-on: https://review.typo3.org/52181


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>