fix survey fields are saved only in customer

apps/formbricks-com/pages/waitlist.tsx

@@ -227,7 +227,6 @@ const WaitlistPage = () => (
                 id: "wauPage",
                 config: {
                   autoSubmit: true,
-                  addFieldsToCustomer: ["wau"],
                 },
                 elements: [
                   {

apps/web/src/pages/api/capture/forms/[formId]/submissions/[submissionId]/index.ts

@@ -68,7 +68,6 @@ export default async function handle(req: NextApiRequest, res: NextApiResponse)
           },
           data: { data: customerData },
         });
-        return res.status(200).json({ message: "Submission updated" });
       } else {
         if ("email" in submission.customer) {
           const customerEmail = submission.customer.email;