Vulkan: prefer D24_UNORM_X8_UINT as D32_UNORM fallback D24_UNORM_S8_UINT might need a separate plane or might not be compressible depending on gpus. Prefer D24_UNORM_X8_UINT. Test: glmark2 Bug: b/259570128 Change-Id: I8e30f8dbe35853cc9647f2452a2bde8b2c6a1e26 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4201091 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Auto-Submit: Chia-I Wu <olv@google.com>