qpa: Geometry handling fixes
We don't need to emit {x,y,width,height}Changed signals ourselves. We also need to send an expose event otherwise the window can be rendered incorrectly if it's resized. The logic follows QtWayland implementation.
We don't need to emit {x,y,width,height}Changed signals ourselves. We also need to send an expose event otherwise the window can be rendered incorrectly if it's resized. The logic follows QtWayland implementation.