[BUGFIX] Fix exception in view module for missing site configuration

When opening a page in the view module, that belongs to a page
tree with no valid site configuration, an exception was thrown,
because the ModuleData clean-method was expecting at least one
item in the language array.

Resolves: #100092
Releases: main
Change-Id: I60ae316e29ec87d62ba8728103283bbe0778f0c8
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78032


Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>