Function tasks_monitor_dormant

async fn tasks_monitor_dormant<R: Runtime>(
    dormant_rx: Receiver<Option<DormantMode>>,
    netdir: Arc<dyn NetDirProvider>,
    chanmgr: Arc<ChanMgr<R>>,
    bridge_desc_mgr: Arc<Mutex<Option<Arc<BridgeDescMgr<R>>>>>,
    periodic_task_handles: Vec<TaskHandle>,
)

Monitor dormant_mode and enable/disable periodic tasks as applicable

This function is spawned as a task during client construction.