Cross-hair rotation does not work anymore
Summary: Induced by the new custom multi widget the rotation-functionality was accidentally broken. This commit fixes the bug.
Test Plan: manual
Reviewers: MITK Reviewer Group I, O1 MITK Core, kislinsk
Reviewed By: MITK Reviewer Group I, O1 MITK Core, kislinsk
Maniphest Tasks: T26377
Differential Revision: https://phabricator.mitk.org/D202