message: Fix scrollbar clipping in `Scrollable` draw logic
diff: @@ -514,13 +514,19 @@ where
  let is_scrollbar_visible =
  style.background.is_some() || style.border_width > 0.0;
  - renderer.with_layer(bounds, |renderer| {
  + renderer.with_layer(
  + Rectangle {
  + width: bounds.width + 2.0,
  + height: bounds.height + 2.0,
  + ..bounds
  + },
  + |renderer| {
  if is_scrollbar_visible {
  renderer.fill_rectangle(renderer::Quad {
  bounds: scrollbar.bounds,
  - background: style
  - .background
  - .unwrap_or(Background::Color(Color::TRANSPARENT)),
  + background: style.background.unwrap_or(
  + Background::Color(Color::TRANSPARENT),
  + ),
  border_radius: style.border_radius,
  border_width: style.border_width,
  border_color: style.border_color,
  @@ -539,7 +545,8 @@ where
  border_color: style.scroller.border_color,
  });
  }
  - });
  + },
  + );
  } else {
  self.content.draw(
  renderer,
  