Decode output which doubles as reference frames (COINCIDE mode)
remains an active DPB slot for as long as the decoder keeps
referencing it, and decode submissions bake the image layout into
their barriers at record time. A host-side layout transition can
therefore not be synchronized against them, and host transfers of such
frames were found to corrupt image contents on Intel once frame
threading varied the submission order.
Do not set VK_IMAGE_USAGE_HOST_TRANSFER_BIT_EXT on such frames. This
makes the incompatibility visible through the usage flags, and routes
our own transfer path through the queue.
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