add subscription gorm preload

internal/infrastructure/database/repositories/product/gorm_subscription_repository.go

@@ -172,10 +172,10 @@ func (r *GormSubscriptionRepository) ListSubscriptions(ctx context.Context, quer
 		dbQuery = dbQuery.Offset(offset).Limit(query.PageSize)
 	}
 
-	// 预加载Product的id、name、code字段，并同时预加载ProductCategory的id、name、code字段
+	// 预加载Product的id、name、code、price、is_package字段，并同时预加载ProductCategory的id、name、code字段
 	if err := dbQuery.
 		Preload("Product", func(db *gorm.DB) *gorm.DB {
-			return db.Select("id", "name", "code", "category_id").
+			return db.Select("id", "name", "code", "price", "is_package", "category_id").
 				Preload("Category", func(db2 *gorm.DB) *gorm.DB {
 					return db2.Select("id", "name", "code")
 				})