[flutter_tools] add logging to integration test (#51527)

diff --git a/packages/flutter_tools/test/integration.shard/hot_reload_test.dart b/packages/flutter_tools/test/integration.shard/hot_reload_test.dart
index 612de2f..2118ff6 100644
--- a/packages/flutter_tools/test/integration.shard/hot_reload_test.dart
+++ b/packages/flutter_tools/test/integration.shard/hot_reload_test.dart
@@ -131,6 +131,7 @@
     final Completer<void> sawDebuggerPausedMessage2 = Completer<void>();
     final StreamSubscription<String> subscription = _flutter.stdout.listen(
       (String line) {
+        print('[LOG]:"$line"');
         if (line.contains('(((TICK 1)))')) {
           expect(sawTick1.isCompleted, isFalse);
           sawTick1.complete();