WidgetTestInteractive.ExitFullscreenRestoreState fails flakily in views_mus_interactive_ui_tests with WS2

See work to use test_ws / ws2 in views_mus_interactive_ui_tests here:
  https://chromium-review.googlesource.com/c/chromium/src/+/1138749

[ RUN      ] WidgetTestInteractive.ExitFullscreenRestoreState
[193996:194080:0717/100545.037461:3969444099132:INFO:service_process_launcher.cc(200)] Launched child process pid=194090, instance=, name=test_ws, user_id=505C0EE9-3013-43C0-82B0-A84F50CF8D84
[194090:194090:0717/100545.225321:3969444287155:ERROR:window_service.cc(30)] Not implemented reached in void ui::ws2::(anonymous namespace)::BindEventInjectorRequest(ui::mojom::EventInjectorRequest)
[194090:194090:0717/100545.225691:3969444287345:ERROR:window_service.cc(34)] Not implemented reached in void ui::ws2::(anonymous namespace)::BindGpuRequest(ui::mojom::GpuRequest)
[194090:194090:0717/100545.225867:3969444287520:ERROR:window_service.cc(34)] Not implemented reached in void ui::ws2::(anonymous namespace)::BindGpuRequest(ui::mojom::GpuRequest)
[194090:194090:0717/100545.225995:3969444287649:ERROR:window_service.cc(39)] Not implemented reached in void ui::ws2::(anonymous namespace)::BindDiscardableSharedMemoryManagerRequest(discardable_memory::mojom::DiscardableSharedMemoryManagerRequest)
[194090:194090:0717/100545.231313:3969444292965:ERROR:window_tree.cc(1316)] Not implemented reached in virtual void ui::ws2::WindowTree::SetHitTestMask(ui::Id, const base::Optional<gfx::Rect> &)
../../ui/views/widget/widget_interactive_uitest.cc:1346: Failure
Expected equality of these values:
  ui::SHOW_STATE_NORMAL
    Which is: 1
  GetWidgetShowState(toplevel)
    Which is: 4
Stack trace:
#0 0x00000047f62c testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop()
#1 0x00000047f009 testing::internal::AssertHelper::operator=()
#2 0x000000456d5d views::test::WidgetTestInteractive_ExitFullscreenRestoreState_Test::TestBody()

../../ui/views/widget/widget_interactive_uitest.cc:1354: Failure
Expected equality of these values:
  ui::SHOW_STATE_NORMAL
    Which is: 1
  GetWidgetShowState(toplevel)
    Which is: 4
Stack trace:
#0 0x00000047f62c testing::internal::UnitTestImpl::CurrentOsStackTraceExceptTop()
#1 0x00000047f009 testing::internal::AssertHelper::operator=()
#2 0x000000457164 views::test::WidgetTestInteractive_ExitFullscreenRestoreState_Test::TestBody()

[  FAILED  ] WidgetTestInteractive.ExitFullscreenRestoreState (234 ms)