Fix in newly merged test

pkgs/test/test/runner/suite_load_timeout_test.dart

diff --git a/pkgs/test/test/runner/suite_load_timeout_test.dart b/pkgs/test/test/runner/suite_load_timeout_test.dart
index 5d7aaff..6b11294 100644
--- a/pkgs/test/test/runner/suite_load_timeout_test.dart
+++ b/pkgs/test/test/runner/suite_load_timeout_test.dart
@@ -5,6 +5,7 @@
 @TestOn('vm')
 library;
 
+import 'package:matcher/expect.dart';
 import 'package:test/test.dart';
 import 'package:test_descriptor/test_descriptor.dart' as d;