layers: Leave INDEX_BUFFER_BOUND set in set_cb_pso_status
layers: Leave INDEX_BUFFER_BOUND set in set_cb_pso_status

Change-Id: I5ca986c95b97cdf97a0f65b0c34db32d91428645

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