[FSSDK-9602] Bug Bash + JS SDK Follow-ons + Bag-o Updates

[mikechu-optimizely]

Summary

• Add bug bash starter to main branch
• Updates required by JS SDK betaN versions

Test plan

• All tests are expected to pass

Issues

• FSSDK-9602

[mikechu-optimizely]

CI pipe failing until JS SDK beta5 is published to NPM, which includes export logging types and values. We're also working to make compatible the end-to-end test suite.