message: Fix layout of a `TitleBar` without controls
diff: @@ -202,7 +202,7 @@ where
  vec![title_layout, controls_layout],
  )
  } else {
  - layout::Node::new(Size::new(title_width, title_height))
  + layout::Node::new(Size::new(max_size.width, title_height))
  };
  node.move_to(Point::new(padding, padding));
  