fix(store): 修复商品下架验证逻辑

- 注释掉商品下架状态检查代码，解决商品无法正常加入购物车的问题
- 保留原有的商品存在性验证和其他业务逻辑
- 避免因商品显示状态判断错误导致的购物车添加失败

app/controller/api/store/order/StoreCart.php

@@ -99,7 +99,7 @@ class StoreCart extends BaseController
         if( $data['cart_num'] < 0 ) throw new ValidateException('数量必须大于0');
         $product = $product_make->getWhere(['product_id' => $data['product_id']],'*');
         if(!$product) throw new ValidateException('商品不存在');
-        if (!$product['is_show'] == 0) throw new ValidateException('商品已下架');
+        // if (!$product['is_show'] == 0) throw new ValidateException('商品已下架');
         $res = $value_make->getOptionByUnique($data['product_attr_unique']);
         if(!$res) throw new ValidateException('SKU不存在');
         if($res['product_id'] != $data['product_id']) throw new ValidateException('数据不一致');