Vulkan: Use fragment shading rate access flags Image memory barrier for a fragment shading rate attachment needs to use VK_ACCESS_FRAGMENT_SHADING_RATE_ATTACHMENT_READ_BIT_KHR as the access flag instead of VK_ACCESS_SHADER_READ_BIT Bug: angleproject:8484 Change-Id: I3316f1a5965ed3866e683494ee4f8df0b208d92c Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5379262 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>