[test] Skip flaky test for turbofan on windows.

test/cctest/cctest.status

 # Copyright 2011 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 222 matching lines @@
   # Windows doesn't support nosnap mode.
   'test-serialize/*': [SKIP],
 }],  # 'no_snap == True and system == windows'
 
 ##############################################################################
 ['system == windows', {
 
   # BUG(3331). Fails on windows.
   'test-heap/NoWeakHashTableLeakWithIncrementalMarking': [SKIP],
 
+  # BUG(v8:4573).
+  'test-api/MultipleIsolatesOnIndividualThreads': [PASS, NO_VARIANTS],
 }],  # 'system == windows'
 
 ##############################################################################
 ['system == macos', {
 
   # BUG(3125).
   'test-debug/DebugGetLoadedScripts': [PASS, FLAKY],
   'test-debug/DebugStepLinear': [PASS, FLAKY],
   'test-debug/DebuggerClearMessageHandler': [PASS, FLAKY],
 }],  # 'system == macos'
@@ skipping 211 matching lines @@
 ##############################################################################
 ['arch == ppc and simulator_run == True or arch == ppc64 and simulator_run == True', {
 
   # Pass but take too long with the simulator.
   'test-api/Threading1': [PASS, SLOW],
   'test-api/Threading2': [PASS, SLOW],
   'test-api/ExternalArrays': [PASS, SLOW],
 
 }],  # 'arch == ppc64 and simulator_run == True'
 ]