message: Use convenience `Rectangle::to` conversion in ListBoxBase
diff: @@ -116,11 +116,7 @@ void ListBoxBase::onMouseDown(EventHandler::MouseButton button, int x, int y)
  if (empty() || button == EventHandler::MouseButton::BUTTON_MIDDLE) { return; }
  - if (button == EventHandler::MouseButton::BUTTON_RIGHT && isPointInRect(x, y,
  - static_cast<int>(positionX()),
  - static_cast<int>(positionY()),
  - static_cast<int>(width()),
  - static_cast<int>(height())))
  + if (button == EventHandler::MouseButton::BUTTON_RIGHT && mRect.to<int>().contains(Point{x, y}))
  {
  setSelection(constants::NO_SELECTION);
  return;
  