[drained] Backlight and bluetooth not restored

### Affected hardware version

Bangle 2

### Your firmware version

2v29

### The bug

After power is restored, LCD backlight is off. Going to settings shows backlight is 1, but backlight then starts working.

Also, bluetooth does not seem to work after power is restored. Making watch connectable again seems to fix the issue.

### Installed apps

_No response_

### Author

_No response_

No source file or test is named. First reproduce the issue on a Bangle 2 running firmware 2v29 by restoring power after a drain, then compare the backlight and Bluetooth states before and after opening Settings or making the watch connectable. Done means both features restore without those manual actions, with a regression test or clearly documented reproduction result.

Written by the indexing model from the issue text.