tests: Skip test for 14a004dc if all offsets are valid
tests: Skip test for 14a004dc if all offsets are valid

(but first try to artificially lower the attribute offset limit
using LUNARG_device_profile_api)

Also fixes some unexpected VU errors in this test that were
exposed when the main test accidentally passed. Fixes #1781.

KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers,KhronosGroup/Vulkan-LoaderAndValidationLayers