Vulkan: account for yuvCscStandard in switch validation The previous condition only accounted for ints, but needs to account for yuvCscStandard in order to support the new emulated yuv<->rgb builtins. Bug: b/223456677 Change-Id: I25e0c88b9c8eb5f8caf3e7640fe391a9b9c10bf1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3764431 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Lingfeng Yang <lfy@google.com>