Issue #3388655 by yovanny.gomez.oyola: Fix PHP 8.2 warnings

src/Plugin/views/sort/ArgOrderSort.php

@@ -13,6 +13,13 @@ use Drupal\views\Views;
  */
 class ArgOrderSort extends SortPluginBase {
 
+  /**
+   * Sort values.
+   *
+   * @var array
+   */
+  protected array $sort_values;
+
   /**
    * {@inheritdoc}
    */