Switch from `react` to `preact`

[Archmonger]

Description

Checklist

Please update this checklist as you complete each item:

• [ ] Tests have been developed for bug fixes or new functionality.
• [ ] The changelog has been updated, if necessary.
• [ ] Documentation has been updated, if necessary.
• [ ] GitHub Issues closed by this PR have been linked.

_{By submitting this pull request I agree that all contributions comply with this project's open source license(s).}