Include Z-Wave JS lowSecurityReason in node added websocket message (#128896)

* Propagate lowSecurityReason to FE when adding a zwavejs device insecurely

* update tests

homeassistant/components/zwave_js/api.py

@@ -740,6 +740,7 @@ async def websocket_add_node(
             "status": node.status,
             "ready": node.ready,
             "low_security": event["result"].get("lowSecurity", False),
+            "low_security_reason": event["result"].get("lowSecurityReason"),
         }
         connection.send_message(
             websocket_api.event_message(

tests/components/zwave_js/test_api.py

@@ -590,6 +590,7 @@ async def test_add_node(
         "status": 0,
         "ready": False,
         "low_security": False,
+        "low_security_reason": None,
     }
     assert msg["event"]["node"] == node_details