[BUGFIX] Pagetree - Prevent a call to moveNode while creating nodes

Change-Id: I355cfb5ed4d2ebfac26376f5f774dca4d89a0c6c
Fixes: #39820
Releases: 6.0, 4.7, 4.6, 4.5
Reviewed-on: https://review.typo3.org/17642
Reviewed-by: Mario Rimann
Reviewed-by: Benjamin Mack
Tested-by: Benjamin Mack