message: Update SideBar for v9
  Closes
diff: @@ -84,6 +84,13 @@ declare class Sidebar<Options extends ApplicationOptions = ApplicationOptions> e
  */
  protected _onChangeTab(event: MouseEvent | null, tabs: Tabs, active: string): void;
  + /**
  + * Handle the special case of left-clicking a tab when the sidebar is collapsed.
  + * @param event - The originating click event
  + * @internal
  + */
  + protected _onLeftClickTab(event: MouseEvent): void;
  +
  /**
  * Handle right-click events on tab controls to trigger pop-out containers for each tab
  * @param event - The originating contextmenu event
  