[BUGFIX] Re-add language switcher for sys_file_metadata records

Using the TranslationConfigurationProvider API returns an array
of available languages for a given site (and on pid=0 returns the
available translations as well), brings back the Language Switcher
when editing sys_file_metadata records.

Resolves: #93033
Releases: master
Change-Id: Ia727d1ce326462629d7864d381187595a1da2502
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69721


Tested-by: core-ci <typo3@b13.com>
Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>