[TASK] Do not generate Controller tests which assert mock behavior of the SUT

Change-Id: I393d7b45f4e69bb59ed15962ab93ebdadc2e2986
Resolves: #58700
Reviewed-on: https://review.typo3.org/30012
Reviewed-by: Nico de Haen
Tested-by: Nico de Haen