fix(ProductRepo): 将isset检查改为!empty检查以确保数据有效性

src/Infrastructure/Repository/ProductRepo.php

@@ -148,7 +148,7 @@ final class ProductRepo extends AbstractRepo implements RechargeProductRepoInter
         $result = Json::decode($content);
 
         return new RechargeProduct(
-            oneTime: isset($result['one_time'])
+            oneTime: !empty($result['one_time'])
                 ? new ProductItem(
                     id: $result['one_time']['id'],
                     description: $result['one_time']['name'],
@@ -164,7 +164,7 @@ final class ProductRepo extends AbstractRepo implements RechargeProductRepoInter
                     ),
                 )
                 : null,
-            renew: isset($result['renew'])
+            renew: !empty($result['renew'])
                 ? new ProductItem(
                     id: $result['renew']['id'],
                     description: $result['renew']['name'],