[TASK] Toolbar drop down menu style

Fix styling of toolbar drop down menu:
* p
* table
* ul-li

Intermediate Patch - bridge to https://review.typo3.org/#/c/34776/

Resolves: #62927
Releases: master
Change-Id: Ie5105e00b3e84c9982e17893122d89c6c9628466
Reviewed-on: http://review.typo3.org/34099


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Felix Kopp <felix-source@phorax.com>
Tested-by: Felix Kopp <felix-source@phorax.com>