Vulkan: override format for mismatched attribs Prevents Vulkan validation error by replacing the input format for any mismatched vertex attributes with a format compatible to what the shader expects. Bug: angleproject:3436 Change-Id: Ia52f29c084d82bbc4e9149102cd4b5fc25ccb9b3 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1698567 Commit-Queue: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>