vulkan: fix depth buffer renderpass loadOp issue. when change the depth compare function, Renderpass need to change the mAcess flag accordingly. Bug: b/269929460 Change-Id: I83826c1b07c6d22600d6cd039e7d8bfd0b5b39c3 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4284624 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Hailin Zhang <hailinzhang@google.com>