## Context
Adds a "Best available region" option in the region selector for the
project creation form
- Should only show up for free plan organizations (will be selected as
the default option instead of the recommended option from GET
`/available-regions`)
- "Recommended" badges will also be hidden in this scenario
- Behaviour should be status quo for non free plan organizations
<img width="500" alt="image"
src="https://github.com/user-attachments/assets/de0a183d-37c0-445d-98ca-c5aaf6353e73"
/>
## To test
Important to ensure that project creation still behaves as per usual
- [ ] Free plan: Creating a project with "best available region" select
creates the project if the recommended region from GET
`/available-regions`
- A quick way to check this is to swap to a paid org and see the
"recommended" general region
- [ ] Free plan: Can also create a project with other regions selected
as per usual
- [ ] Non free plan: Can create project as per usual
- [ ] Verify that everything is status quo if configcat feature flag is
off