trigger container update after disabling urgent in timer

switching workspace directly to urgent window creates timer which delays
reset of urgent state so user is able to notice it. make sure state
change is reflected visually as well (border change) by triggering
container update

Fixes: #8377

sway/input/seat.c

@@ -1094,6 +1094,7 @@ static void seat_send_unfocus(struct sway_node *node, struct sway_seat *seat) {
 static int handle_urgent_timeout(void *data) {
 	struct sway_view *view = data;
 	view_set_urgent(view, false);
+	container_update_itself_and_parents(view->container);
 	return 0;
 }