[TASK] Remove extra check for pageNotFoundHandling

This fixes a functional test in EXT:workspaces,
allowing for getting rid of an extra check in the
frontend request workflow.

Resolves: #85199
Releases: master
Change-Id: I642fca3a2873f0fe758164fca3f9261480dbc4da
Reviewed-on: https://review.typo3.org/57074


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Hader <oliver.hader@typo3.org>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>