[omkar-334]

This PR refactors the upernet model as per #43979

cc @molbap

[omkar-334]

I don't know why this test is failing -

data: {
      message: 'No commit found for SHA: ',
      documentation_url: 'https://docs.github.com/rest/commits/commits#get-a-commit',
      status: '422'
    }

Maybe you could re-run it to see if it passes.

[github-actions]

[For maintainers] Suggested jobs to run (before merge)

run-slow: upernet

[ArthurZucker]

Thanks for picking this up from #43979! That call to contributions has been closed, and the reference refactor (#43590) landed afterwards with a slightly different pattern, so this branch is out of date and I'm closing it. If you'd still like to migrate UperNet, a fresh PR following #43590 is welcome.