test: make mocha always exit when all tests ran in CI

[porcellus]

Summary of change

test: make mocha always exit when all tests ran in CI

Related issues

• Failed CI run

Test Plan

N/A

Documentation changes

N/A

Checklist for important updates

• Changelog has been updated
• frontendDriverInterfaceSupported.json file has been updated (if needed)
  • Along with the associated array in lib/ts/version.ts
• Changes to the version if needed
  • In package.json
  • In package-lock.json
  • In lib/ts/version.ts
• Had run npm run build-pretty
• Had installed and ran the pre-commit hook
• 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]

size-limit report 📦

Path	Size
lib/build/bundleEntry.js	19.21 KB (0%)