Issue #3423608 by TomTech: Fix PHPStan issues

Closes #3423608

modules/dangerous/src/Plugin/Commerce/FedEx/DangerousGoodsPlugin.php

@@ -101,7 +101,7 @@ class DangerousGoodsPlugin extends FedExPluginBase {
    *   The DG status.
    */
   protected function getDangerousStatus(ShipmentItem $shipment_item) {
-    $storage = \Drupal::entityTypeManager()->getStorage('commerce_order_item');
+    $storage = $this->entityTypeManager->getStorage('commerce_order_item');
     /** @var \Drupal\commerce_order\Entity\OrderItemInterface $order_item */
     $order_item = $storage->load($shipment_item->getOrderItemId());
     $purchased_entity = $order_item->getPurchasedEntity();