BUG: Fixed clone when cloned volume does not have display node. Fixes #3795

Fixing second function doing that (rev23561 fixed only vtkSlicerVolumesLogic::CloneVolume, this commit fixes vtkSlicerVolumesLogic::CloneVolumeWithoutImageData)

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23563 3bd1e089-480b-0410-8dfb-8563597acbee