fix |> 20764 【网络切换】断网后访问新闻频道，频道展示无网络的默认缺省页，网络恢复后再次访问该频道，频道数据未自动加载，不应一直显示无网络的默认缺省页。

 import { BottomNavi, CommonConstants, ViewType } from 'wdConstant';
 import { EmitterEventId, EmitterUtils, Logger, NetworkUtil } from 'wdKit';
-import { EmptyComponent } from '../view/EmptyComponent';
+import { EmptyComponent, WDViewDefaultType } from '../view/EmptyComponent';
 import PageModel from '../../viewmodel/PageModel';
 import { autoRefresh, onActionEnd, onActionStart, onActionUpdate } from '../../utils/PullDownRefresh';
 import LoadMoreLayout from './LoadMoreLayout';
@@ -317,6 +317,11 @@ export struct PageComponent {
         // console.log(TAG, 'page onAutoRefresh111 ' + this.needload)
         if (this.needload) {
           this.getData();
+        }else{
+          let netStatus = NetworkUtil.isNetConnected()
+          if(this.pageModel.emptyType === WDViewDefaultType.WDViewDefaultType_NoNetwork && netStatus ){
+            this.onAutoRefresh()
+          }
         }
         this.needload = false;
       }

@@ -120,6 +120,7 @@ export class PageHelper {
           pageModel.emptyType = WDViewDefaultType.WDViewDefaultType_NoContent1;
           return;
         } else {
+          pageModel.emptyType = WDViewDefaultType.WDViewDefaultType_Default
           //更新数据
           pageModel.compList.addItems(liveReviewDTO.list);
           this.refreshUIEnd(pageModel, true);
@@ -138,6 +139,7 @@ export class PageHelper {
           this.refreshUIEnd(pageModel, false)
           return;
         }
+        pageModel.emptyType = WDViewDefaultType.WDViewDefaultType_Default
         pageModel.pageInfo = pageInfo;
         if (pageInfo.md5 == pageModel.displayPageInfoMd5) {
           // 缓存一致，不解析