Fixed T30420
Summary:
Fill image was not correcktly initialized by itk image
(geometry information of z-dimension)
Test Plan: unit test, check fill/erase chacklist again. Tool should now work
Reviewers: O1 MITK Reviewer Group I, kislinsk
Reviewed By: O1 MITK Reviewer Group I, kislinsk
Maniphest Tasks: T30420
Differential Revision: https://phabricator.mitk.org/D941