Vulkan: Fix WaW same-layout image transitions
Vulkan: Fix WaW same-layout image transitions

These transitions were incorrectly handled by an execution barrier
alone, but that's not per spec.  Write-after-write hazards always need a
memory barrier.

Bug: angleproject:3347
Bug: angleproject:3554
Change-Id: Id2d2579888e0b59e589fcdd52416363f2cf5cf97
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1943546
Reviewed-by: Tobin Ehlis <c15ba1c6ec8841cd136fafb26b333b1f76c86fb4@google.com>
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Commit-Queue: Shahbaz Youssefi <582eeec4f08a2ccd61e3ef52115e6e7c571582de@chromium.org>

ppy/angle,ppy/angle,ppy/angle,ppy/angle