[BUGFIX] Remove hardcoded index.php indexed search links

Resolves: #86326
Releases: master
Change-Id: Ifbe8c5067c5a7e47188ea89f4e6df3db9192ac61
Reviewed-on: https://review.typo3.org/58387


Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>