Vulkan: Prefer fallback to renderable texture than CPU copy When a texture copy is done, the transfer path is preferred. If transfer is not possible, ANGLE falls back to a draw-based copy. However, if the format is not renderable, ANGLE falls back to CPU copy. Instead, this change makes ANGLE try to fall back to a renderable format before giving up on the draw-based copy. Bug: b/351872449 Change-Id: I3d09dd88cc0b7feb5e92e58c4f19380973eb5e94 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5775592 Reviewed-by: Amirali Abdolrashidi <abdolrashidi@google.com> Reviewed-by: Charlie Lao <cclao@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>