MeshPart: [skip ci] use correct icon for Mesh cross-section dialog
MeshPart: [skip ci] use correct icon for Mesh cross-section dialog

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