Go all-in with Jest ESM migration

[wojtekmaj]

Requires #2409.

This is an optional, intermediate step between full Vitest migration. It completely drops usage of Jest's magic globals, instead relying on @jest/globals, for importing describe, test, expect, it…

This is probably for the better regardless of whether or not we would like to migrate to Vitest, as this makes Jest far easier to work with in TypeScript environment, especially when working along other testing tools like Playwright.

If we do want to migrate to Vitest though, this PR will make majority of the migration to be as simple as find-and-replace @jest/globals to vitest.

• If you don't want react-pdf to be migrated to Vitest, consider the above, feel free to close if you don't find this useful.
• If you want react-pdf to be migrated to Vitest, and:
  • don't want extra clarity (noise?) in your commits on how this migration is done, feel free to close. This will not block Vitest migration PR.
  • want extra clarity on Jest -> Vitest migration process in your commits, please merge.

[changeset-bot]

🦋 Changeset detected

Latest commit: a3baaa6

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 13 packages

Name	Type
@react-pdf/primitives	Minor
@react-pdf/stylesheet	Minor
@react-pdf/examples	Minor
@react-pdf/renderer	Minor
@react-pdf/textkit	Minor
@react-pdf/layout	Minor
@react-pdf/pdfkit	Minor
@react-pdf/png-js	Minor
@react-pdf/render	Minor
@react-pdf/svgkit	Minor
@react-pdf/image	Minor
@react-pdf/font	Minor
@react-pdf/fns	Minor

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[wojtekmaj]

Screw this - Jest is fundamentally broken. Let's go straight for #2495.