Updated tests

Author: Sterling Long

test/mock_classes.dart

@@ -1,3 +1,4 @@
+import 'package:walletconnect_flutter_v2/apis/core/relay_client/relay_client.dart';
 import 'package:walletconnect_flutter_v2/walletconnect_flutter_v2.dart';
 import 'package:walletconnect_modal_flutter/services/explorer/explorer_service.dart';
 import 'package:walletconnect_modal_flutter/services/utils/platform/platform_utils.dart';
@@ -15,6 +16,7 @@ import 'package:http/http.dart' as http;
   ToastUtils,
   Web3App,
   Sessions,
+  RelayClient,
   http.Client,
 ])
 class Mocks {}