[BUGFIX] Show spaces of content elements in page module

Resolves: #82290
Releases: master,8.7
Change-Id: Ie988290ae4431f8a77dc2c38397429b9fa0c95ef
Reviewed-on: https://review.typo3.org/53879


Reviewed-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Tested-by: Stefan Neufeind <typo3.neufeind@speedpartner.de>
Reviewed-by: Riccardo De Contardi <erredeco@gmail.com>
Tested-by: Riccardo De Contardi <erredeco@gmail.com>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Simon Praetorius <simon@praetorius.me>
Tested-by: Simon Praetorius <simon@praetorius.me>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>