[TASK] Always use fluid based page module

The feature toggle for `fluidBasedPageModule` is removed
to enforce the use of the new fluid based page module.

The already deprecated `PageLayoutView` will finally
be removed in a separate patch.

Resolves: #92870
Releases: master
Change-Id: I974a1b010cb14a545e80b7486f5f7c1f0083788e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/66698


Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>