[BUGFIX] Allow users without delete permissions to drag pages in page tree

BE users without delete rights can now drag-drop pages in the page tree.
The drag - delete area is not shown.

Resolves: #25135
Releases: 8.7, 7.6
Change-Id: Icc82675a783f19ae72b6d00ac2809ad76b93dd67
Reviewed-on: https://review.typo3.org/55535


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>