RLS without Data API?

interface CreateNeonClient {
    database_url: string;
    session_jwt?: string;
    stytch?: StytchClient;
    authToken?: () => Promise<string>;
}

async function getSession(session_jwt: string, stytch: StytchClient) {
    const session = await stytch.sessions.authenticateJwt({
        session_jwt,
        max_token_age_seconds: 60,
    });
    return session.session_jwt;
}   

export function createNeonClient({
    database_url,
    session_jwt,
    stytch,
    authToken,
}: CreateNeonClient) {
    const client = neon(database_url, {
        authToken:
            authToken ??
            (session_jwt && stytch
                ? async () => {
                    const sessionJWT = await getSession(session_jwt, stytch);
                    if (!sessionJWT) throw new Error("No session JWT available");
                    return sessionJWT;
                }
                : undefined),
    });

    return drizzle(client, { schema });
}