desktop-shell: update for manual surface/view mapping

This is a follow up for desktop-shell to manually
set mapped status for views/surfaces it controls

v2:

- Add manual mapping to shell_fade_create_surface()
  and shell_ensure_fullscreen_black_view()

Signed-off-by: Armin Krezović <krezovic.armin@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
diff --git a/desktop-shell/input-panel.c b/desktop-shell/input-panel.c
index 73eac5c..0d003b1 100644
--- a/desktop-shell/input-panel.c
+++ b/desktop-shell/input-panel.c
@@ -85,6 +85,8 @@
 	                          &ipsurf->view->layer_link);
 	weston_view_geometry_dirty(ipsurf->view);
 	weston_view_update_transform(ipsurf->view);
+	ipsurf->surface->is_mapped = true;
+	ipsurf->view->is_mapped = true;
 	weston_surface_damage(ipsurf->surface);
 
 	if (ipsurf->anim)