Function take_over_lease_now 

pub(crate) async fn take_over_lease_now(
    id_store: &Arc<Store>,
    http: &Client,
    agent: &str,
) -> Outcome

Take over’s relay step on the requester (super::wan_lease::take_over), with a fresh shared token. Unknown (fail open) when this instance has no MuxBus session or no token can be loaded.