[BUGFIX] Also consider select fields for slug generation

Generation of a slug proposal based on defined
generator fields does now also work for basic select
fields, which were previously not considered by the
JS component, because they do not use the FormEngine
specific visible / hidden field combination.

Resolves: #94371
Releases: main, 11.5
Change-Id: Iedd2d17e97db8abd9cf5c4a3b476825fcd854191
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/76485


Tested-by: core-ci <typo3@b13.com>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Bartsch <bo@cedev.de>