CartSavedDetailVo

购物车费用明细（Saved 拆解）
非墨西哥仓生效；原始金额均为 USD，前端按 currency 换算展示

{
    "skuQty": 0,
    "skuWeight": 0,
    "originSubtotal": 0,
    "totalSaved": 0,
    "vipDiscount": 0,
    "qtyDiscount": 0,
    "promotionDiscount": 0,
    "couponDiscount": 0
}