[TASK] Create a backend module URL with BackendUtility::getModuleUrl

Creating a backend module URL should be done with
BackendUtility::getModuleUrl to get the token.

Resolves: #56460
Releases: 0.6
Change-Id: I6168176d8dd0883a2960d6a0d300df1595278ce8
Reviewed-on: https://review.typo3.org/27966
Reviewed-by: Wouter Wolters
Tested-by: Wouter Wolters
Reviewed-by: Helmut Hummel
Tested-by: Helmut Hummel
Reviewed-by: Francois Suter
Tested-by: Francois Suter