Fix：5535 【商城小程序】全国特产、文玩艺术板块的省级导航页面搜索栏，在搜索有效名称时提示“未找到该城市，请重新输入城市名称”

(cherry picked from commit 51e9d8b966)

pages/chose-city/chose-city.vue

@@ -384,20 +384,17 @@ export default {
       this.mescroll && this.mescroll.triggerDownScroll()
     },
     search() {
-      if(this.keyword === '') return
-      const matchIndex = this.listGroup.findIndex((group, index) => {
-        let result
-        group.city.forEach(item => {
-          result = item.cityName.indexOf(this.keyword, 0)
-          if (result !== -1) {
-            this.asideTap(index);
-            return null;
-          }
-        })
-        if (result !== -1) {
-          return result
-        }
+      const keyword = (this.keyword || '').trim()
+      if (!keyword) return
+      const matchIndex = this.listGroup.findIndex(group => {
+        const cityList = Array.isArray(group.city) ? group.city : []
+        return cityList.some(item => item && item.cityName && item.cityName.indexOf(keyword) !== -1)
       })
+      if (matchIndex !== -1) {
+        this.keyword = keyword
+        this.asideTap(matchIndex)
+        return
+      }
       if (matchIndex === -1) {
         uni.showToast({
           title: '未找到该城市，请重新输入城市名称',