[BUGFIX] Initialize more properties of PageLayoutView

With #78450 the StandardContentPreviewRenderer creates an instance of
the  `PageLayoutView` to keep the existing hooks alive.
However 2 more properties need to be filled to improve the
compatibility.

Resolves: #90528
Releases: master

Change-Id: I0c56988bdc9d524f1cfa411ae0c62d00ad1789dd
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63408


Reviewed-by: Claus Due <claus@phpmind.net>
Reviewed-by: Susanne Moog <look@susi.dev>
Reviewed-by: Christian Eßl <indy.essl@gmail.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Hader <oliver.hader@typo3.org>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Susanne Moog <look@susi.dev>
Tested-by: Oliver Hader <oliver.hader@typo3.org>