message: add `Dialog.#onKeyDown` property
diff: @@ -45,6 +45,11 @@ declare class Dialog<Options extends DialogOptions = DialogOptions> extends Appl
  data: Dialog.Data;
  + /**
  + * A bound instance of the _onKeyDown method which is used to listen to keypress events while the Dialog is active.
  + */
  + #onKeyDown: (event: KeyboardEvent) => void | Promise<void>;
  +
  /**
  * @defaultValue
  * ```typescript
  