umfangreiche Behebung von TS-Fehlern. "npm run types" läuft nun ohne Fehler durch

resources/js/admin/pages/AuthCallbackPage.tsx

@@ -4,7 +4,7 @@ import { useAuth } from '../auth/context';
 import { ADMIN_DEFAULT_AFTER_LOGIN_PATH } from '../constants';
 import { decodeReturnTo, resolveReturnTarget } from '../lib/returnTo';
 
-export default function AuthCallbackPage(): JSX.Element {
+export default function AuthCallbackPage(): React.ReactElement {
   const { status } = useAuth();
   const navigate = useNavigate();
   const [redirected, setRedirected] = React.useState(false);