feat: session claim validator type

[porcellus]

Summary of change

Convert SessionClaimValidator into a type from abstract class to enable adding validators as by destructuring built-in validators (and overriding parts if necessary).

Related issues

Test Plan

Added a type test into with-typescript. No behaviour change.

Documentation changes

We do not mention this in our docs

Checklist for important updates

• [x] Changelog has been updated
• [x] frontendDriverInterfaceSupported.json file has been updated (if needed)
  • Along with the associated array in lib/ts/version.ts
• [x] Changes to the version if needed
  • In package.json
  • In package-lock.json
  • In lib/ts/version.ts
• [x] Had run npm run build-pretty
• [x] Had installed and ran the pre-commit hook
• [x] Issue this PR against the latest non released version branch.
  • To know which one it is, run find the latest released tag (git tag) in the format vX.Y.Z, and then find the latest branch (git branch --all) whose X.Y is greater than the latest released tag.
  • If no such branch exists, then create one from the latest released branch.

[github-actions[bot]]

size-limit report 📦

Path	Size
lib/build/bundleEntry.js	19.08 KB (-0.25% 🔽)