back() {
    if (!this._initialized || this._popStateInProgress) {
      return;
    }
    const state = window.history.state;
    if (this.#isValidState(state) && state.uid > 0) {
      window.history.back();
    }
  }
Go back one step in the browser history.
NOTE: Avoids navigating away from the document, useful for "named actions".