compositor: Add explicit API call to redirect X11 windows

This is not useful yet, but will be when Xwayland may restart

https://gitlab.gnome.org/GNOME/mutter/merge_requests/709

src/core/display.c

@@ -648,6 +648,8 @@ meta_display_init_x11 (MetaDisplay  *display,
   if (!display->display_opening)
     meta_display_manage_all_xwindows (display);
 
+  meta_compositor_redirect_x11_windows (display->compositor);
+
   return TRUE;
 }