2024-10: content update for Chat

[jffortier]

Background

This PR brings content from unstable that was missed in the previous 2024-10-2 release AND brings content update that came from our Request to Release review.

Checklist

• I have 🎩'd these changes
• I have updated relevant documentation

[jamesvidler]

@jffortier since this is just a doc change, you don't need to add a change log unless you do want to publish a new version of the package. If you exclude this, it won't add a new patch version.

[github-actions]

We detected some changes in packages/*/package.json or packages/*/src, and there are no updates in the .changeset directory. If the changes are user-facing and should cause a version bump, run yarn changeset to track your changes and include them in the next release CHANGELOG. If you are making simple updates to repo configuration, examples, or documentation, you do not need to add a changeset.