Fix saving of existing appearance presets

Fixes https://gitlab.com/kicad/code/kicad/-/issues/10166

(cherry picked from commit c52421869a)

pcbnew/widgets/appearance_controls.cpp

@@ -2445,6 +2445,9 @@ void APPEARANCE_CONTROLS::onLayerPresetChanged( wxCommandEvent& aEvent )
         }
         else
         {
+            preset->layers       = getVisibleLayers();
+            preset->renderLayers = getVisibleObjects();
+
             index = m_cbLayerPresets->FindString( name );
             m_presetMRU.Remove( name );
         }