chore(core): fix MockClientState

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

packages/stream_chat_flutter_core/test/mocks.dart

@@ -18,10 +18,10 @@ class MockClient extends Mock implements StreamChatClient {
 }
 
 class MockClientState extends Mock implements ClientState {
-  OwnUser? _user;
+  OwnUser? _currentUser;
 
   @override
-  OwnUser get user => _user ??= OwnUser(
+  OwnUser get currentUser => _currentUser ??= OwnUser(
         id: 'testUserId',
         role: 'admin',
         createdAt: DateTime.now(),

packages/stream_chat_flutter_core/test/stream_chat_core_test.dart

@@ -431,7 +431,7 @@ void main() {
   );
 
   testWidgets(
-    'streamChatCoreState.userStream should emit all the user events '
+    'streamChatCoreState.currentUserStream should emit all the user events '
     'provided by client',
     (tester) async {
       await tester.runAsync(() async {