[Bug]: Observers section displays offline observers as recently online

[MrAlders0n]

Platform: Other

Description:
The admin panel Observers section shows long-dead observers as Online 15min ago. I know they are dead because they were my test observers 3 months ago.. 🙂

Discord: https://discord.com/channels/1463383723327356992/1466576054670987294/1536352710222282842

Submitted by: vaizkii (Discord)

[vaizki]

Unfortunately I had already removed the offending observers before the bug report and they have not popped back up again. But I suspect that if the connection to our MQTT (MeshCore Finland) goes down and up, you will get retained /status messages which will trigger this condition again.