[BUGFIX] Use configured `languageField` in context menu item providers

Replace the hard-coded `sys_language_uid` name
with the actually configured `languageField` value.

Resolves: #102758
Releases: main, 12.4
Change-Id: I74d0624c0b79b3085247d5d58f091857ff228411
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/82382


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