Update ButtonBar API docs to show how to migrate to OverflowBar #128430
Description
Is there an existing issue for this?
- I have searched the existing issues
- I have read the guide to filing a bug
Use case
ButtonBar is set to be deprecated as it doesn't work with new Button types. We should make this clear in the API docs
Proposal
Update the API docs to direct developers to use OverflowBar
related: #127955