Iconsistencies in online/offline detection

[foxriver76]

Device Manager and Objects Tab showing devices as online which are not connected to the power chord for more than a week, like "Weihnachtsbaum".

The connected state seems to be e.g.

    "statusStates": {
      "onlineId": "wled.0.80646fc504b4._info._online"
    }

However this state does not contain a boolean. Thus, at least admin objects tab is showing it as online whenever there is content in it.

The content is like {"val":false,"ack":true} which seems to be by accident.

The detection in the config UI works well:

Version 0.7.2