message: Update CanvasDocumentMixin to v9.235
  Closes
diff: @@ -27,6 +27,13 @@ declare class CanvasDocumentMixin<T extends foundry.abstract.Document<any, any>>
  */
  protected _object: PlaceableObject | null; // TODO: Replace with InstanceType<ObjectClass<T>> | null once the circular reference problem has been solved
  + /**
  + * Has this object been deliberately destroyed as part of the deletion workflow?
  + * @internal
  + * @defaultValue `false`
  + */
  + protected _destroyed: boolean;
  +
  /**
  * A lazily constructed PlaceableObject instance which can represent this Document on the game canvas.
  */
  