[BUGFIX] Avoid clipped dropdowns in panels

Resolves: #100164
Releases: main
Change-Id: Ie9ec6d5aa098ba29893f0b425291c0339996a644
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78123


Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Markus Klein <markus.klein@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>