message: Update WallsLayer to 0.8.9
diff: @@ -195,9 +195,6 @@ declare global {
  }
  | this['_cloneType'];
  - /** @override */
  - protected _onClickLeft(event: PIXI.InteractionEvent): void;
  -
  /** @override */
  protected _onDragLeftStart(event: PIXI.InteractionEvent): Promise<Wall>;
  