Vulkan: Fix texture copy from texture3d to texture2d or cubemap In vulkan spec, if srcImage or dstImage parameters are of VkImageType VK_IMAGE_TYPE_3D, the baseArrayLayer and layerCount members of the corresponding subresource must be 0 and 1. Bug: angleproject:4553 Change-Id: Iabdc9708c86606c0d78c095c9d44827951264180 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2166863 Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>