## Context
As per PR title - should not have any visual nor functional change
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
- **Changes**
- Standardized infrastructure, region, and database configuration around
AWS-based environments.
- Removed Fly.io-specific region and provider options from project
creation, instance sizing, and infrastructure settings.
- Enabled disk validation, spend-cap eligibility, backup restoration,
and extension setup consistently across supported projects.
- Updated billing and region displays to use the applicable AWS
configuration.
- **Bug Fixes**
- Corrected project-specific restrictions that could incorrectly hide
configuration and billing controls.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
This PR implements the new flow to confirm subscription upgrades using Orb pending changes. This is backwards compatible and based on a flag exposed by the backend (`subscriptionPreview.pending_subscription_flow`).
Just like the organization creation, the entire flow is slightly different - instead of creating a payment method separately, the payment method is added inline while doing the upgrade and then attached to the customer. If payment fails, the upgrade will not go through. If payment requires additional action, the user needs to confirm the payment before allowing the upgrade.
For testing the new flow locally, toggle the flag in `flags.ts` on the backend.
Changes include
- No longer rely on the `changeType` from the plans endpoint as this is regularly out-of-sync and displays wrong up/downgrade info due to race conditions
- `readOnly` mode for Stripe elements if anything is loading/submitting
- Reduced prop drilling for some components
- Hide payment method and address selection on downgrade
* Move all studio files from /studio to /apps/studio.
* Move studio specific prettier ignores.
* Fix the ui references from studio.
* Fix the css imports.
* Fix all package.json issues.
* Fix the prettier setup for the studio app.
* Add .turbo folder to prettierignore.
* Fix the github workflows.
Joshen Lim