[TASK] Fix some typos in PageRepository

Remove some old comments about not loaded TCA too.

Resolves: #78787
Releases: master
Change-Id: Ice141123b91987957101e1193c003410e9c0282f
Reviewed-on: https://review.typo3.org/50771


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Tested-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>