fix: update `getCustomerFiles` method signature in `AbstractOrder`

Updated the `getCustomerFiles` method signature in `AbstractOrder.php` to accept an optional
boolean parameter `$parsing`. Method can now be customized to return parsed file information or raw
data.

src/QUI/ERP/Order/AbstractOrder.php

@@ -2321,7 +2321,7 @@ public function clearCustomerFiles(): void
         // TODO: Implement clearCustomerFiles() method.
     }
 
-    public function getCustomerFiles(): array
+    public function getCustomerFiles(bool $parsing = false): array
     {
         // TODO: Implement getCustomerFiles() method.
         return [];