[TASK] Increase touch area for collapsible panel headings

Increase the target area height from 13px to 48px and
let the anchor tag cover the entire panel heading size.

Releases: main
Resolves: #99580
Change-Id: I859db3f96f2f819ec4b272dd98e61b44a79c4eaf
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77428


Tested-by: core-ci <typo3@b13.com>
Tested-by: Nikita Hovratov <nikita.h@live.de>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>