refactor: set default tax to default shipping

src/QUI/ERP/Shipping/EventHandler.php

@@ -591,6 +591,7 @@ protected static function addDefaultShipping(ArticleList $Articles)
             if (!$shippingFactor) {
                 $PriceFactor = Shipping::getInstance()->getDefaultPriceFactor();
                 $Articles->addPriceFactor($PriceFactor);
+                $Articles->recalculate();
             }
         } catch (QUI\Exception $Exception) {
         }

src/QUI/ERP/Shipping/Shipping.php

@@ -443,9 +443,14 @@ public function getDefaultPriceFactor(): QUI\ERP\Products\Utils\PriceFactor
             'currency'    => QUI\ERP\Defaults::getCurrency()->getCode()
         ]);
 
-        //$PriceFactor->setSum($price);
         $PriceFactor->setNettoSum($price);
 
+        // set default vat
+        $Area     = QUI\ERP\Defaults::getArea();
+        $TaxType  = QUI\ERP\Tax\Utils::getTaxTypeByArea($Area);
+        $TaxEntry = QUI\ERP\Tax\Utils::getTaxEntry($TaxType, $Area);
+        $PriceFactor->setVat($TaxEntry->getValue());
+
         return $PriceFactor;
     }