Revert "xwayland: push invisible windows outside layout"

This reverts commit accb3d8d0b.

Bad idea

src/Compositor.cpp

@@ -2773,4 +2773,4 @@ void CCompositor::setPreferredScaleForSurface(wlr_surface* pSurface, double scal
 
 void CCompositor::setPreferredTransformForSurface(wlr_surface* pSurface, wl_output_transform transform) {
     wlr_surface_set_preferred_buffer_transform(pSurface, transform);
-}
+}