feat: enable optional fields (#1470)

packages/lib/server-only/document/complete-document-with-token.ts

@@ -1,5 +1,6 @@
 import { DOCUMENT_AUDIT_LOG_TYPE } from '@documenso/lib/types/document-audit-logs';
 import type { RequestMetadata } from '@documenso/lib/universal/extract-request-metadata';
+import { fieldsContainUnsignedRequiredField } from '@documenso/lib/utils/advanced-fields-helpers';
 import { createDocumentAuditLogData } from '@documenso/lib/utils/document-audit-logs';
 import { prisma } from '@documenso/prisma';
 import {
@@ -85,7 +86,7 @@ export const completeDocumentWithToken = async ({
     },
   });
 
-  if (fields.some((field) => !field.inserted)) {
+  if (fieldsContainUnsignedRequiredField(fields)) {
     throw new Error(`Recipient ${recipient.id} has unsigned fields`);
   }