NBI component - Heartbeat:

- Reactivated thread distributing heatbeaths

src/nbi/service/health_probes/Namespaces.py

@@ -24,7 +24,7 @@ class HeartbeatServerNamespace(Namespace):
     def __init__(self):
         super().__init__(namespace=SIO_NAMESPACE)
         self._thread = HeartbeatThread(self)
-        #self._thread.start()
+        self._thread.start()
 
     def stop_thread(self) -> None:
         self._thread.stop()