The Fly login/auth endpoints were removed from the management API
(supabase/platform#30987). This cleans up the associated studio code and
regenerates the API types.
Note: existing Fly projects are still running, so all `cloud_provider`
guards and Fly-specific UI (disk management, billing, pg_cron warnings,
etc.) are intentionally kept in place.
**Removed:**
- `sign-in-fly-tos.tsx` page
- `organization-by-fly-organization-id-mutation.ts`
- `project-by-fly-extension-id-mutation.ts`
**Other:**
- Regenerated API types to reflect removed endpoints
- Removed stale Fly-related comments in `InstanceConfiguration`,
`ObservabilityMenu`, `ReportsMenu`
- Fixed unrelated optional chaining bug in `SSOConfig.tsx`
## To test
- Check project creation flow still works
- Verify `/sign-in-fly-tos` no longer resolves
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Co-authored-by: Alaister Young <10985857+alaister@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
