widget: Skip popovers in allocation
Native widgets get allocated via their surface, so can skip them here. This avoids criticals when re-mapping a popover for the second time, as can be seen e.g. in the 'Selections' demo in gtk4-demo.
Native widgets get allocated via their surface, so can skip them here. This avoids criticals when re-mapping a popover for the second time, as can be seen e.g. in the 'Selections' demo in gtk4-demo.