[Bug]: t-beam won't stay shutdown

### Category

Hardware Compatibility

### Hardware

T-Beam

### Firmware Version

2.5.0.9ac0e26

### Description

Recent lilygo t-beam v1.x

Shutting down the device via user long-press or android app works, but after 30s, the t-beam board will boot up again. It appears impossible to force the board off without removing the 18650.

### Relevant log output

```Shell
n/a
```
