Next.js Supabase V3 (#463)

Version 3 of the kit:
- Radix UI replaced with Base UI (using the Shadcn UI patterns)
- next-intl replaces react-i18next
- enhanceAction deprecated; usage moved to next-safe-action
- main layout now wrapped with [locale] path segment
- Teams only mode
- Layout updates
- Zod v4
- Next.js 16.2
- Typescript 6
- All other dependencies updated
- Removed deprecated Edge CSRF
- Dynamic Github Action runner

apps/e2e/tests/utils/billing.po.ts

@@ -38,9 +38,9 @@ export class BillingPageObject {
     // wait a bit for the webhook to be processed
     await this.page.waitForTimeout(1000);
 
-    return this.page
-      .locator('[data-test="checkout-success-back-link"]')
-      .click();
+    await this.page.locator('[data-test="checkout-success-back-link"]').click();
+
+    await this.page.waitForURL('**/billing');
   }
 
   proceedToCheckout() {