fix: set user to article list at setCustomer()

This commit refactors the formatting and structure of the reversal method for improved readability.
Additionally, it removes an unnecessary exception in the 'setCustomer' method.

This commit also fixes the customer user settings in various methods in the order class. Now,
whenever a customer is set or removed, the related articles will correctly update their user status.

src/QUI/ERP/Order/AbstractOrder.php

@@ -474,8 +474,10 @@ protected function setDataBaseData(array $data): void
      * @param QUI\Interfaces\Users\User|null $PermissionUser
      * @return ErpEntityInterface|null
      */
-    public function reversal(string $reason = '', null | QUI\Interfaces\Users\User $PermissionUser = null): ?ErpEntityInterface
-    {
+    public function reversal(
+        string $reason = '',
+        null | QUI\Interfaces\Users\User $PermissionUser = null
+    ): ?ErpEntityInterface {
         $this->delete($PermissionUser);
         return null;
     }
@@ -1167,7 +1169,6 @@ public function setCurrency(QUI\ERP\Currency\Currency $Currency): void
      * Set a customer to the order
      *
      * @param array|User|QUI\Interfaces\Users\User $User
-     * @throws Exception
      * @throws QUI\Exception
      * @throws ExceptionStack
      */
@@ -1264,6 +1265,7 @@ public function setCustomer(QUI\Interfaces\Users\User | array | User $User): voi
                 QUI::getEvents()->fireEvent('onQuiqqerOrderCustomerChange', [$this]);
             }
 
+            $this->Articles?->setUser($this->Customer);
             return;
         }
 
@@ -1277,6 +1279,7 @@ public function setCustomer(QUI\Interfaces\Users\User | array | User $User): voi
                 QUI::getEvents()->fireEvent('onQuiqqerOrderCustomerChange', [$this]);
             }
 
+            $this->Articles?->setUser($this->Customer);
             return;
         }
 
@@ -1293,6 +1296,8 @@ public function setCustomer(QUI\Interfaces\Users\User | array | User $User): voi
             if ($this->customerId !== $oldCustomerId) {
                 QUI::getEvents()->fireEvent('onQuiqqerOrderCustomerChange', [$this]);
             }
+
+            $this->Articles?->setUser($this->Customer);
         }
     }
 
@@ -1303,6 +1308,7 @@ public function removeCustomer(): void
     {
         $this->Customer = null;
         $this->customerId = 0;
+        $this->Articles->setUser(null);
 
         try {
             QUI::getEvents()->fireEvent('onQuiqqerOrderCustomerChange', [$this]);