Views: two contextual filters with "OR"

By default views is using "AND"

/**
 * Implements hook_views_query_alter().
 */
function MYMODULE_views_query_alter(ViewExecutable $view, QueryPluginBase $query): void {
 // Show input friendship requests and MY output friendship requests.
 if ($view->id() === 'MYVIEWS' && $view->current_display === 'page_1') {
   $current_user = \Drupal::currentUser()->id();
   foreach ($query->where as &$group) {
     foreach ($group['conditions'] as $key => $condition) {
       if (in_array($condition['field'], ['flagging.entity_id', 'flagging.uid = :flagging_uid'])) {
         unset($group['conditions'][$key]);
       }
     }
   }
   unset($group);
   $or_group = $query->setWhereGroup('OR');
   $query->addWhere($or_group, 'flagging.entity_id', $current_user, '=');
   $query->addWhere($or_group, 'flagging.uid', $current_user, '=');
 }
}