[BUGFIX] Avoid "All languages" option for single language sites

In case a site in the TYPO3 page tree only features the
default language, the module menu of the page module
does no longer add "All languages" as option, since this
led to misbehaviour, e.g. empty views in some cases.

Resolves: #95308
Releases: master
Change-Id: I54f72c99ff5c8511fd119e024493153408be33c3
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/71173


Tested-by: core-ci <typo3@b13.com>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Simon Schaufelberger <simonschaufi+typo3@gmail.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Thomas Löffler <loeffler@spooner-web.de>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>