♻️ refactor(order-submit): 优化订单提交页面代码

- 移除未使用的 React 导入，改为直接导入 useState 和 useEffect
- 删除未使用的 isUserSelected 状态变量
- 重构商品映射逻辑，添加类型注解并优化条件判断

mini/src/pages/order-submit/index.tsx

@@ -1,6 +1,6 @@
 import { View, ScrollView, Text, Textarea } from '@tarojs/components'
 import { useQuery, useMutation, useQueries } from '@tanstack/react-query'
-import React, { useState, useEffect } from 'react'
+import { useState, useEffect } from 'react'
 import Taro from '@tarojs/taro'
 import { deliveryAddressClient, orderClient, goodsClient } from '@/api'
 import { InferResponseType, InferRequestType } from 'hono'
@@ -29,8 +29,7 @@ export default function OrderSubmitPage() {
   const [selectedAddress, setSelectedAddress] = useState<Address | null>(null)
   const [orderItems, setOrderItems] = useState<CheckoutItem[]>([])
   const [totalAmount, setTotalAmount] = useState(0)
-  const [remark, setRemark] = useState("")
-  const [isUserSelected, setIsUserSelected] = useState(false) 
+  const [remark, setRemark] = useState("") 
 
   // 获取地址列表
   const { data: addresses } = useQuery({
@@ -71,13 +70,14 @@ export default function OrderSubmitPage() {
   })
 
   // 创建商品ID到最新商品信息的映射
-  const goodsMap = new Map()
-  goodsQueries.forEach((query, index) => {
-    if (query.data && orderItems[index]) {
-      const itemId = orderItems[index].id
-      goodsMap.set(itemId, query.data)
-    }
-  })
+  const goodsMap = new Map<number, any>()
+  if (orderItems.length > 0) {
+    goodsQueries.forEach((query: any) => {
+      if (query.data) {
+        goodsMap.set(query.data.id, query.data)
+      }
+    })
+  }
 
   // 创建订单
   const createOrderMutation = useMutation({