chore: globally install corepack

[trivikr]

Corepack is not going to be distributed with Node.js v25+
TSC vote nodejs/TSC#1697 (comment)

This PR updates the command to globally installing corepack.

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Tests and linting

• Run the tests with pnpm test and lint the project with pnpm lint

[changeset-bot]

⚠️ No Changeset found

Latest commit: 35aa0f6

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-svelte-15734-svelte.vercel.app/

[Rich-Harris]

Thank you. Is there a reason to prefer this over using pnpm/action-setup? Presumably that's a more direct path to the same outcome?

[trivikr]

Is there a reason to prefer this over using pnpm/action-setup?

I don't know. I primarily use yarn, and not pnpm.

I just checked for popular projects on GitHub which use corepack enable, and posted PRs (like this one) as a suggestion before they break in Node.js 25+.

[github-actions]

Playground

pnpm add https://pkg.pr.new/svelte@15734

[Rich-Harris]

I merged #15744 which uses pnpm directly (and aligns this workflow with the others in the repo), so I'll close this — thank you for the prod!