Replace Karma with Playwright in fast-web-utilities

[radium-v]

Pull Request

📖 Description

This PR replaces Karma, Mocha, and Chai in @microsoft/fast-web-utilities with Playwright.

📑 Test Plan

All tests should pass as expected.

✅ Checklist

General

• [ ] I have included a change request file using $ yarn change
• [x] I have added tests for my changes.
• [x] I have tested my changes.
• [ ] I have updated the project documentation to reflect my changes.
• [x] I have read the CONTRIBUTING documentation and followed the standards for this project.

⏭ Next Steps

It appears that this package has some outdated methods which could probably be updated, removed, or replaced.