Terminal Spam on developer mode

### Is there an existing issue for this?

- [x] I have searched the existing issues

### Description of the bug

When disconnecting the FC the terminal keeps spamming.
```
2026-09-09 14:28:37,498 - WARNING - Battery status not available from telemetry
2026-09-09 14:28:37,499 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:37,801 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:38,102 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:38,404 - WARNING - Battery status not available from telemetry
2026-09-09 14:28:38,405 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:38,706 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:39,008 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:39,309 - WARNING - Battery status not available from telemetry
2026-09-09 14:28:39,310 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:39,611 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:39,912 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
2026-09-09 14:28:40,213 - WARNING - Battery status not available from telemetry
2026-09-09 14:28:40,214 - ERROR - Failed to send command: read failed: [Errno 6] Device not configured
...
```

### Steps To Reproduce

Connect the fc and disconnect while AMC still openend

### Expected behavior

Suggested:
There should be a timeout after which it should stop the messages and give a popup someting like
"Can't Connect to FC"

### Screenshots / Logs

_No response_

### Software information

- Operating system:
- arduPilot Methodic Configuration version:

### Additional context

_No response_