[TASK] Use new way to register backend_layout wizard

Resolves: #56471
Releases: 6.2
Change-Id: I8bd844326566715201ab3ae82811c945566b5b88
Reviewed-on: https://review.typo3.org/27977
Reviewed-by: Anja Leichsenring
Tested-by: Anja Leichsenring
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel