BUG: Update EMSegment to fix EMSeg_SlicerCommonInterfaceTestGeneral test

This commit ensures the ITK IO factory associated with
executable vtkSlicerCommonInterfaceTest are registered.

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23683 3bd1e089-480b-0410-8dfb-8563597acbee