chore: clearer job step names

[teemingc]

This PR adds names to the job steps so that they're not all the same name such as https://github.com/sveltejs/kit/actions/runs/35619535479/job/106399137528

[pkg-svelte-dev]

Install the latest version of @sveltejs/kit from 8abd233:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/8abd2336e0b5f075b15accca2a0b11be249b1ef1

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/17176

[changeset-bot]

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Latest commit: 8abd233

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[Nic-Polumeyv]

I'm not seeing this fix the redirect, still 404: https://github.com/sveltejs/kit/actions/runs/35677006218

I think with --prebuilt the file never makes it into the routes, only vercel build merges it into config.json.

[Nic-Polumeyv]

Honestly I'd just delete the test... vercel build is what puts those redirects in front of the adapter's routes, so we shouldn't have anything that could break it.

[teemingc]

Agree. I'll delete it. d6a7176 (#17164)