Vulkan: Fix performance issue c9e0edc2 changed the layerCount in SubresourceUpdate to VK_REMAINING_ARRAY_LAYERS in some cases. So that the deferred clear logic cannot work correctly. Bug: angleproject:4617 Change-Id: Idedada085c618ff900538094412c752522594684 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2191551 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org> Commit-Queue: Charlie Lao <cclao@google.com>