/**
 * Implements hook_language_fallback_candidates_OPERATION_alter().
 */
function {{ machine_name }}_language_fallback_candidates_OPERATION_alter(array &$candidates, array $context) {
  // We know that the current OPERATION deals with entities so no need to check
  // here.
  if ($context['data']->getEntityTypeId() == 'node') {
    $candidates = array_reverse($candidates);
  }
}