* Revert "Make sure the property editor layout is contained within its container (prevent Z-index bleed-through) (#13583)"
This reverts commit 8463d906a7.
* remove seemingly unused attribute readonly
* contain everything with contain:layout
this is set if the property editor is in preview mode to make sure all overlays work
* Revert "remove seemingly unused attribute readonly"
This reverts commit 7a2743e8f664e707e8df5022fe754dfd77c508ea.