Node online sends a lot of messages on disconnect

[maxweissboeck]

If Miniserver gets disconnected, eg. by saving a new config file to Miniserver, the online node sends a lot of messages with value false.

Ideally the not connected message in Node Red shold be sent only once if disconnetc happens. That would be the same behavior as for the connect message, this connect message is only sent once per connect.

Can easily be reproduced on MS Gen 2 by saving config to the Miniserver, happens not always bot often enough.