fix channelpreview lastmessage

example/lib/main.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:stream_chat_flutter/stream_chat_flutter.dart';
 
 void main() async {
+  WidgetsFlutterBinding.ensureInitialized();
   final client = Client(
     's2dxdhpxd94g',
     logLevel: Level.INFO,
@@ -43,11 +44,11 @@ class ChannelListPage extends StatelessWidget {
   Widget build(BuildContext context) {
     return Scaffold(
       body: ChannelListView(
-        filter: {
+//        filter: {
-          'members': {
+//          'members': {
-            '\$in': [StreamChat.of(context).user.id],
+//            '\$in': [StreamChat.of(context).user.id],
-          }
+//          }
-        },
+//        },
         sort: [SortOption('last_message_at')],
         pagination: PaginationParams(
           limit: 20,

lib/src/channel_preview.dart

@@ -110,7 +110,10 @@ class ChannelPreview extends StatelessWidget {
       initialData: channel.state.messages,
       builder: (context, snapshot) {
         final messages = snapshot.data;
-        final lastMessage = messages?.isNotEmpty == true ? messages.last : null;
+        final lastMessage = messages?.isNotEmpty == true
+            ? messages.lastWhere((m) =>
+                !(m.isDeleted && m.status == MessageSendingStatus.FAILED))
+            : null;
         if (lastMessage == null) {
           return SizedBox();
         }