[gardening] Mark vm/dart/regress47472_test on TSAN

It seemingly flakily times out om mac under TSAN

Change-Id: I2e030756bfb353b8e2044c4ad676c50d2ff9f003
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/449122
Reviewed-by: Slava Egorov <vegorov@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>

runtime/tests/vm/vm.status

@@ -165,6 +165,7 @@ dart/gc/fragmentation*: Skip # Uses too much memory with TSAN overhead and kills
 dart/gc/out_of_memory*: Skip # Uses too much memory with TSAN overhead and kills bot
 dart/gc/scavenger_abort_test: Skip # Uses too much memory with TSAN overhead and kills bot
 dart/hash_map_probes_limit_test: SkipSlow # Test includes large program compilation.
+dart/regress47472_test: Pass, Slow # Slow due to throwing 1 million exceptions.
 dart/regress_40753_test: Skip # This test crashes on the bot, but not locally, and infrastructure repeatedly fails to locate its coredump.
 dart/trigger_gc_in_native_test: Skip # This test crashes on the bot, but not locally, and infrastructure repeatedly fails to locate its coredump.
 dart/unobfuscated_static_symbols_test: Pass, Slow # Test includes creating several snapshots in both ELF and assembly modes.

tests/standalone/io/process_working_directory_test.dart

@@ -32,7 +32,7 @@ class ProcessWorkingDirectoryTest {
         ], workingDirectory: directory.path)
         .then((process) {
           process.exitCode.then((int exitCode) {
-            Expect.equals(exitCode, 99);
+            Expect.equals(99, exitCode);
             directory.deleteSync();
           });
           process.stdout.listen((_) {});