add test for dispatcher kernel signature consistency (#6904)
add test for dispatcher kernel signature consistency (#6904)

* add test for dispatcher kernel signature consistency

* add dispatcher feature signature consistency test

* fix error message

Co-authored-by: Vasilis Vryniotis <d748cd3f763058dcf20e5489b9bc2373b78db68c@users.noreply.github.com>
pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision