[BUGFIX] Inconsistent setting confirmEmailChangePostEdit

The setting "confirmEmailChangePostEdit" looks inconsistent in
the postCreateSave handling and is not checked in the controller

Resolves: #60159
Change-Id: Id01ebf54c5da806293e4f7dd7a491dcb23f1dc08
Reviewed-on: https://review.typo3.org/31453
Reviewed-by: Sebastian Fischer
Tested-by: Sebastian Fischer