When pulling children out of footprints don't format them wrong.

If we leave a footprint parent pointer then we'll
format as fp_line, fp_arc, etc. instead of gr_line,
gr_arc, etc.

Fixes https://gitlab.com/kicad/code/kicad/-/issues/20537

pcbnew/kicad_clipboard.cpp

@@ -417,6 +417,8 @@ void CLIPBOARD_IO::SaveSelection( const PCB_SELECTION& aSelected, bool isFootpri
                 }
 
                 copy->SetLocked( false );
+                copy->SetParent( nullptr );
+                copy->SetParentGroup( nullptr );
 
                 // locate the reference point at (0, 0) in the copied items
                 copy->Move( -refPoint );
@@ -442,7 +444,6 @@ void CLIPBOARD_IO::SaveSelection( const PCB_SELECTION& aSelected, bool isFootpri
                             RECURSE_MODE::NO_RECURSE );
                 }
 
-                copy->SetParentGroup( nullptr );
                 delete copy;
             }
         }