Update test status files. Issue #24990.

tests/standalone/standalone.status

Index: tests/standalone/standalone.status
diff --git a/tests/standalone/standalone.status b/tests/standalone/standalone.status
index b136d43f192d7065cdabd63ee96d187568f049c9..a74a84304f7a71aad17bc66a9ccb05aad479ad38 100644
--- a/tests/standalone/standalone.status
+++ b/tests/standalone/standalone.status
@@ -45,8 +45,8 @@ io/directory_fuzz_test: Skip
 io/socket_many_connections_test: Skip
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
-typed_array_test: Fail # Issue 13921
-typed_array_int64_uint64_test: Fail # Issue 13921
+typed_array_test: Skip # Passes mysteriously, issues 24990, 13921
+typed_array_int64_uint64_test: Skip # Passes mysteriously, issues 24990, 13921
 typed_data_isolate_test: SkipByDesign # This test uses dart:io
 io/*: SkipByDesign # Don't run tests using dart:io in the browser
 package/*: Skip # Do not run those in Dartium.