Update API endpoint for SSO link creation in billing hook

- Changed the API endpoint from `/auth/sso-link` to `/api/auth/sso-link` in the `useCreatePaymentMethodsSsoLink` function to align with the updated API structure.

apps/portal/next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
+import "./.next/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

apps/portal/src/features/billing/hooks/useBilling.ts

@@ -178,7 +178,7 @@ export function useCreatePaymentMethodsSsoLink(
 ): UseMutationResult<InvoiceSsoLink, Error, void> {
   return useMutation({
     mutationFn: async () => {
-      const response = await apiClient.POST<InvoiceSsoLink>("/auth/sso-link", {
+      const response = await apiClient.POST<InvoiceSsoLink>("/api/auth/sso-link", {
         body: { destination: "index.php?rp=/account/paymentmethods" },
       });
       return getDataOrThrow(response, "Failed to create payment methods SSO link");