Temorarily update status for two flaky tests

runtime/tests/vm/vm.status

Index: runtime/tests/vm/vm.status
diff --git a/runtime/tests/vm/vm.status b/runtime/tests/vm/vm.status
index 7f7fe432ea1e39fd9748e82c6b1a2619b5320ad5..0a2934ac739d243e651e5e3a1723aea6c9b20dba 100644
--- a/runtime/tests/vm/vm.status
+++ b/runtime/tests/vm/vm.status
@@ -2,12 +2,13 @@
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
-cc/IsolateReload_PendingUnqualifiedCall_InstanceToStatic: Fail, Crash
-cc/IsolateReload_PendingUnqualifiedCall_StaticToInstance: Fail, Crash
-cc/IsolateReload_PendingConstructorCall_AbstractToConcrete: Fail, Crash
-cc/IsolateReload_PendingConstructorCall_ConcreteToAbstract: Fail, Crash
-cc/IsolateReload_PendingStaticCall_DefinedToNSM: Fail, Crash
-cc/IsolateReload_PendingStaticCall_NSMToDefined: Fail, Crash
+# Issue 28198
+cc/IsolateReload_PendingUnqualifiedCall_InstanceToStatic: Fail, Crash, Timeout
+cc/IsolateReload_PendingUnqualifiedCall_StaticToInstance: Fail, Crash, Timeout
+cc/IsolateReload_PendingConstructorCall_AbstractToConcrete: Fail, Crash, Timeout
+cc/IsolateReload_PendingConstructorCall_ConcreteToAbstract: Fail, Crash, Timeout
+cc/IsolateReload_PendingStaticCall_DefinedToNSM: Fail, Crash, Timeout
+cc/IsolateReload_PendingStaticCall_NSMToDefined: Fail, Crash, Timeout
 
 # These tests are expected to crash on all platforms.
 cc/ArrayNew_Overflow_Crash: Crash, Timeout