Fix set_alias 404 check: simplify to match generic updateDeviceColumn pattern

Agent-Logs-Url: https://github.com/netalertx/NetAlertX/sessions/661c66ce-45e8-4f96-b51d-1bb0b918c669

Co-authored-by: jokob-sk <96159884+jokob-sk@users.noreply.github.com>

Author: Copilot

server/api_server/api_server_start.py

@@ -586,7 +586,7 @@ def api_device_set_alias(mac, payload=None):
     device_handler = DeviceInstance()
     result = device_handler.updateDeviceColumn(mac, 'devName', alias)
 
-    if not result.get("success") and result.get("error") == "Device not found":
+    if not result.get("success"):
         return jsonify(result), 404
 
     return jsonify(result)