## Context
Just cleans up the experiment that was introduced
[here](https://github.com/supabase/supabase/issues/50851) - can clean up
feature flag in ConfigCat thereafter too
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Project Creation**
* Removed the “Best available” region option. Choose a specific region
or smart group when creating a project; the selected region name appears
in the selector.
* Recommended badges remain visible on recommended regions.
* **Telemetry**
* Project creation events no longer include details about the removed
region option or the initial region recommendation.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Joshen Lim
94b8b06eb2