[BUGFIX] Do not lose Context in AbstractContentObject

When AbstractContentObject is fetching ->getPageRepository()
but TSFE hasn't been fully initialized yet, the Context
from TSFE should be used, and not the global one.

Resolves: #97951
Releases: main, 11.5
Change-Id: I99880839f5458469e7181467de6a8fb667ef9828
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/75194


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Rafael Kähm <rafael.kaehm@dkd.de>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Rafael Kähm <rafael.kaehm@dkd.de>
Reviewed-by: Benni Mack <benni@typo3.org>