Function proxy_to_host_timeout 

pub(crate) async fn proxy_to_host_timeout(
    state: &AppState,
    host: &HostIpc,
    route: &str,
    body: Value,
    timeout: Option<Duration>,
) -> Result<Value, String>

proxy_to_host with a request timeout of its own, for host routes that legitimately take longer than the shared client’s default (a snapshot of a large page, wait_for).