refactor(invoice): 更新 InvoiceProduct 类的位置

- 将 InvoiceProduct 类从 ValueObject 目录移动到 Aggregate/ValueObject 目录
- 更新类的命名空间以反映新的目录结构

tests/Feature/Invoice/QueryCaseInvoiceProductTest.php

@@ -9,7 +9,7 @@
  */
 
 
-use Singularity\HDK\Pay\Domain\Invoice\ValueObject\InvoiceProduct;
+use Singularity\HDK\Pay\Domain\Invoice\Aggregate\ValueObject\InvoiceProduct;
 use Singularity\HDK\Pay\Infrastructure\Repository\InvoiceProductRepo;
 
 use function Hyperf\Support\make;