message: fix(scrollbar): fix htmlElement API compatibility
  fix
diff: @@ -82,7 +82,7 @@ export default class ScrollBar {
  : this.createScrollbarElement(direction)
  // internal scrollbar
  if (scrollbarWrapper !== customElement) {
  - scroll.wrapper.append(scrollbarWrapper)
  + scroll.wrapper.appendChild(scrollbarWrapper)
  } else {
  // custom scrollbar passed by users
  isCustom = true
  