[BUGFIX] Check rootline for extendToSubpages when previewing

The rootline may contain extendToSubpages settings for hidden
or timed records which prevented previewing a page because the
preview checks only considered the current page.

The rootline is now taken into account.

Resolves: #17599
Releases: main, 12.4
Change-Id: I0271caf8decd46fd9dedf31158d62a86e1e0028c
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/79856


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>