[TASK] Unify several infoboxes in backend

There are some cases where an infobox is shown to make the editor
choosing a page in the page tree. With this change a unifed wording
is used.

Resolves: #99623
Releases: main
Change-Id: I3ddc922967458136d76df20310d4d6e663fca653
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77486


Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Stefan Bürk <stefan@buerk.tech>