Part: Enable test for issue 4456
Part: Enable test for issue 4456

Now that issue 4456 is fixed, we don't need to skip this test anymore.

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master