bug(ui): temperature bar graph shows wrong number of devices sometime

[b-rowan]

Describe the bug

The graph for the miner temperatures seems to show random miner amounts sometimes, such as 3-5 when only 2 devices are configured.

Preconditions

No response

Steps to reproduce

Honestly no idea.

Expected behavior

1 miner value in the temperature chart per device added (or at most 1 per board).

Proto Fleet version

v0.2.6

Environment

OS: Ubuntu 25.04 via proxmox LXC
Browser: Brave 1.89.143
Docker: Docker version 29.4.1, build 055a478

Logs

Screenshots & screen recordings

With only 2 miners added: