fix: browser tab showing url instead of page title

apps/client/src/pages/auth/invite-signup.tsx

@@ -1,16 +1,13 @@
-import { Helmet } from "react-helmet-async";
 import { InviteSignUpForm } from "@/features/auth/components/invite-sign-up-form.tsx";
-import {getAppName} from "@/lib/config.ts";
 import { useTranslation } from "react-i18next";
+import { DocumentTitle } from "@/components/ui/document-title.tsx";
 
 export default function InviteSignup() {
   const { t } = useTranslation();
 
   return (
     <>
-      <Helmet>
-        <title>{t("Invitation Signup")} - {getAppName()}</title>
-      </Helmet>
+      <DocumentTitle title={t("Invitation Signup")} />
       <InviteSignUpForm />
     </>
   );