[gardening] mark lib_2/isolate/unresolved_ports_test as flaky

Issue: https://github.com/dart-lang/sdk/issues/35410
Change-Id: Ia1df534d6b8cc7cd36df6a5c3765d5d7d508cf56
Reviewed-on: https://dart-review.googlesource.com/c/89143
Auto-Submit: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Samir Jindel <sjindel@google.com>
Commit-Queue: Samir Jindel <sjindel@google.com>
diff --git a/tests/lib_2/lib_2.status b/tests/lib_2/lib_2.status
index f6628fa..dc0745a 100644
--- a/tests/lib_2/lib_2.status
+++ b/tests/lib_2/lib_2.status
@@ -131,6 +131,9 @@
 [ $compiler != dartdevc && $checked && !$strong ]
 async/future_or_only_in_async_test/00: MissingCompileTimeError
 
+[ $compiler == dartk && $system == macos && $hot_reload && ($arch == simdbc || $arch == simdbc64) ]
+isolate/unresolved_ports_test: Pass, RuntimeError #  Issue 35410
+
 [ $compiler == none && $mode == product ]
 mirrors/library_enumeration_deferred_loading_test: RuntimeError, OK # Deferred loaded eagerly
 mirrors/library_import_deferred_loading_test: RuntimeError, OK # Deferred loaded eagerly