refactor(productDetail): 将onMounted替换为useDidShow以优化页面显示逻辑

@@ -246,7 +246,7 @@
 
 <script setup>
 import { ref, onMounted, computed } from 'vue'
-import Taro, { useShareAppMessage } from '@tarojs/taro'
+import Taro, { useShareAppMessage, useDidShow } from '@tarojs/taro'
 import { Share, Heart1, HeartFill, Message } from '@nutui/icons-vue-taro'
 import payCard from '@/components/payCard.vue'
 import { useFavorite } from '@/composables/useFavorite'
@@ -493,7 +493,7 @@ function filterEmptyValues(arr) {
     });
 }
 
-onMounted(async () => {
+useDidShow(async () => {
     // 获取用户信息
     await userStore.fetchUserInfo()