Using $form_state->getValue() in BlockBase's blockForm throws "subform and parent form must contain the #parents property" exception

Is there a patch for D10?
i have changed #56 a bit to match with D10

  /**
   * {@inheritdoc}
   */
  public function &getValues() {
    $exists = NULL;
    if ($this->isProcessingInput()) {
      $values = &NestedArray::getValue(parent::getValues(), $this->getParents('#parents'), $exists);
    }
    else {
      @trigger_error("Please don't.", E_USER_DEPRECATED);
    }
    if (!$exists) {
      $values = [];
    }
    if (!is_array($values)) {
      throw new \UnexpectedValueException('The form state values do not belong to the subform.');
    }

    return $values;
  }

I am adding patch for D-10.4.x branch.