Issue #3313384: Error "Entity type riddle must be installed" after update

function riddler_update_8202() {

  \Drupal::configFactory()->getEditable('riddler.settings')->delete();

}

/**

 * Install riddler 2.x entity type, if not yet installed.

 */

function riddler_update_8203() {

  $changeList = \Drupal::entityDefinitionUpdateManager()->getChangeList();

  if (!array_key_exists('riddle', $changeList)) {

    return 'Skipped. The new config entity type riddle is already installed.';

  }

  try {

    $riddleEntityTypeDefinition = \Drupal::service('entity_type.manager')->getDefinition('riddle');

    \Drupal::entityDefinitionUpdateManager()->installEntityType($riddleEntityTypeDefinition);

  }

  catch (\Exception $exception) {

    throw new UpdateException($exception->getMessage());

  }

  return 'Installed the new config entity type riddle.';

}