[BUGFIX] Prevent escaping the output of RenderChildrenViewHelper

This patch prevents escaping the output of the RenderChildrenViewHelper.

Resolves: #76112
Releases: master
Change-Id: I6cbb95c99b7bfc9d14b563edae33129080fc32ec
Reviewed-on: https://review.typo3.org/48059


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Tested-by: Anja Leichsenring <aleichsenring@ab-softlab.de>
Reviewed-by: Helmut Hummel <helmut.hummel@typo3.org>
Tested-by: Helmut Hummel <helmut.hummel@typo3.org>