test(core): fix tests

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_flutter_core/lib/src/channels_bloc.dart

@@ -105,7 +105,8 @@ class ChannelsBlocState extends State<ChannelsBloc>
   }) async {
     final client = _streamChatCoreState!.client;
 
-    final clear = paginationParams.offset == 0;
+    final offset = paginationParams.offset;
+    final clear = offset == null || offset == 0;
     if (clear && _paginationEnded) {
       _paginationEnded = false;
     }

packages/stream_chat_flutter_core/lib/src/users_bloc.dart

@@ -75,7 +75,9 @@ class UsersBlocState extends State<UsersBloc>
     }
 
     try {
-      final clear = pagination == null || pagination.offset == 0;
+      final clear = pagination == null ||
+          pagination.offset == null ||
+          pagination.offset == 0;
 
       final oldUsers = List<User>.from(users ?? []);