Add a test for mandatory Fuchsia handle types FEMU isn't reporting zircon events correctly in vkGetPhysicalDeviceExternalSemaphorePropertiesKHR, which causes the tests to be skipped. There's no test that can catch this problem, so add one. Bug: angleproject:4625 Change-Id: I0733e84eccb630569230c360fb900a1f04bf0f9b Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2195690 Commit-Queue: Michael Spang <spang@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>