[gardening] Mark LibTest/io/RawDatagramSocket/singleWhere_A03_t01 failing

The test make assumptions about delivery order which UDP does not
provide

Issue https://github.com/dart-lang/co19/issues/195

Change-Id: I1c1ed618a68ea9e7a96e2733ed78095451aa5d89
Reviewed-on: https://dart-review.googlesource.com/c/85700
Reviewed-by: Daco Harkes <dacoharkes@google.com>
Reviewed-by: Samir Jindel <sjindel@google.com>
Commit-Queue: Daco Harkes <dacoharkes@google.com>
Auto-Submit: Daco Harkes <dacoharkes@google.com>
diff --git a/tests/co19_2/co19_2-kernel.status b/tests/co19_2/co19_2-kernel.status
index d739194..e310aef 100644
--- a/tests/co19_2/co19_2-kernel.status
+++ b/tests/co19_2/co19_2-kernel.status
@@ -7,6 +7,7 @@
 LibTest/collection/ListMixin/ListMixin_class_A01_t02: Pass, Slow  # Does many calls
 LibTest/core/List/List_class_A01_t02: Pass, Slow  # Does many calls
 LibTest/io/RawDatagramSocket/close_A01_t01: Pass, RuntimeError # https://github.com/dart-lang/co19/issues/195
+LibTest/io/RawDatagramSocket/singleWhere_A03_t01: Pass, RuntimeError # https://github.com/dart-lang/co19/issues/195
 
 [ $compiler == dartkp ]
 Language/Expressions/Instance_Creation/New/evaluation_t20: RuntimeError