chore: simplify applyToEnvironment hooks

[teemingc]

A bit of cleanup. Moves the hook to after any global hooks to make it more obvious when it runs. Also removes it from the setup plugin which has no per-environment hooks.

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[pkg-svelte-dev]

Install the latest version of @sveltejs/kit from f29487d:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/f29487d1c9ee9a1ed9043e47ea14eaad7eb18f6a

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/16233

[changeset-bot]

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Latest commit: f29487d

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-kit-16233-svelte.vercel.app/