[gtk/wip/carlosg/backports-4-6: 4/9] demo: Use gtk_window_present()

[Carlos Garnacho <carlosg src gnome org>]

commit c331e22f3a9a252d379cf96ecadda7b0d4dd2e70
Author: Guido Günther <agx sigxcpu org>
Date:   Tue Jan 11 20:27:25 2022 +0100

    demo: Use gtk_window_present()
    
    This lets xdg-activation work as otherwise gdk_wayland_surface_focus is
    never invoked.

 demos/gtk-demo/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index da6b5db73a..a31ce36790 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -1040,7 +1040,7 @@ out:
       g_signal_connect_swapped (G_OBJECT (demo), "destroy", G_CALLBACK (g_application_quit), app);
     }
   else
-    gtk_widget_show (GTK_WIDGET (window));
+    gtk_window_present (GTK_WINDOW (window));
 
   if (autoquit)
     g_timeout_add_seconds (1, auto_quit, app);