[fix] 修复了校务回答详情进去就出不来的bug

lib/feedback/view/official_reply_detail_page.dart

@@ -368,7 +368,7 @@ class _OfficialReplyDetailPageState extends State<OfficialReplyDetailPage>
     return PopScope(
       onPopInvoked: (didPop) async {
         context.read<NewFloorProvider>().clearAndClose();
-        Navigator.pop(context);
+        if (!didPop) Navigator.pop(context);
       },
       canPop: true,
       // onWillPop: () async {