feat(SCRM-5892): [DE][C端]临时停车，BKC,新会员积分，当用户使用优惠券抵扣金额为0的时候，点击新会员积分，依然可以添加新会员积分减免

src/components/newMemberPoints/index.vue

@@ -122,7 +122,7 @@ export default {
       // 调整points的积分available
     },
     isAdd() {
-      if (this.orderDetail.parkingRecord.actualPayFee === 0) return 
+      if (this.orderDetail.parkingRecord.actualPayFee === 0) return Toast('当前无需追加优惠')
       const {usedDiscountHours, maxDiscountHours, totalAvailable, pointsPerUnit} = this.newMemberPoints
       // const { hourPrice = 0 } = this.orderDetail?.parkingRule
       const availableDiscountHours = maxDiscountHours - usedDiscountHours