chore: deprecate v8 / non-modular methods prior to next major release

[mikehardy]

Description

These have all been well-reviewed and are the core of a couple follow-on PRs even

main keeps moving along though and this branch attracts entropic failures, so in discussion with Russell we're going to land these three commits then rebase the further v8-deprecation work off main

Related issues

No related issues, but the v8 APIs need to be removed and we have to follow a deprecation cycle to do so

Release Summary

3 conventional commits, semantic release will handle them nicely

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • Yes
• My change supports the following platforms;
  • Android
  • iOS
• My change includes tests;
  • e2e tests added or updated in packages/\*\*/e2e
  • jest tests added or updated in packages/\*\*/__tests__
• I have updated TypeScript types that are affected by my change.
• This is a breaking change;
  • Yes
  • No

Test Plan

So much testing - all Russell's work on the jest area 💪

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