[BUGFIX] Fix still more undefined variables

Manual testing found a bunch more cases of undefined variables that
need to be addressed.

Resolves: #94057
Releases: master
Change-Id: I0f602d2de5fcfdc8b41545eafacc5ff79bbfdf86
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/69393


Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Richard Haeser <richard@richardhaeser.com>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Reviewed-by: Richard Haeser <richard@richardhaeser.com>