fix: 18167 UI还原问题-【uat】进入视频直播，打开4g 加载视频，然后关闭4g网络，断网滑动视频，网络缺缺省图没有显示文案

@@ -289,12 +289,13 @@ export struct VideoChannelDetail {
     Stack({ alignContent: Alignment.Center }) {
       if (this.netStatus !== undefined) {
         EmptyComponent({
-          emptyType: 1, emptyButton: true, isBlack: true, retry: () => {
+          emptyType: 1, emptyButton: true, isBlack: true, showBackButton: false,  retry: () => {
             this.getDetail()
           }
         })
       } else if (this.isOffLine) {
         EmptyComponent({
+          showBackButton: false,
           emptyType: WDViewDefaultType.WDViewDefaultType_NoVideo,
           retry: () => {
             this.getDetail()