message: update return type of Dialog._onKeyDown
diff: @@ -74,7 +74,7 @@ declare class Dialog<Options extends DialogOptions = DialogOptions> extends Appl
  * Handle a keydown event while the dialog is active
  * @param event - The keydown event
  */
  - protected _onKeyDown(event: KeyboardEvent & { key: "Escape" }): Promise<void>;
  + protected _onKeyDown(event: KeyboardEvent & { key: "Escape" }): ReturnType<Dialog["close"]>;
  protected _onKeyDown(event: KeyboardEvent): void;
  _renderOuter(): ReturnType<Application["_renderOuter"]>;
  