Refactor Supabase type imports for improved clarity

Replaced specific object paths with generic type helpers across several files to enhance readability and maintainability. This change standardizes the import patterns and type definitions for database tables and enums.

packages/billing/gateway/src/components/embedded-checkout.tsx

@@ -1,9 +1,9 @@
 import { Suspense, forwardRef, lazy, memo, useMemo } from 'react';
 
-import { Database } from '@kit/supabase/database';
+import { Enums } from '@kit/supabase/database';
 import { LoadingOverlay } from '@kit/ui/loading-overlay';
 
-type BillingProvider = Database['public']['Enums']['billing_provider'];
+type BillingProvider = Enums<'billing_provider'>;
 
 const Fallback = <LoadingOverlay fullPage={false} />;