[ISSUE] Since runit update, previous power down commands reboot the system now

[D-Nice <D-Nice@users.noreply.github.com>]

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New issue by D-Nice on void-packages repository

https://github.com/void-linux/void-packages/issues/24207

Description:
<!-- Don't request update of package. We have a script for that. https://alpha.de.repo.voidlinux.org/void-updates/void-updates.txt . However, a quality pull request may help. -->
### System

* xuname:  
  `Void 5.7.14_1 x86_64 GenuineIntel notuptodate hold rrDDDDFFFF`

* package:  
  `runit-void-20200720_1.x86_64`

### Expected behavior
`poweroff`, `shutdown`, `halt`, with the appropriate flags to lead to a power down, or in the case of touching the power button, as previously, to lead to a power down.

### Actual behavior
All those commands an actions lead to a reboot, and the final init message indicates a reboot was requested.

### Steps to reproduce the behavior
`sudo poweroff` with aforementioned pkg, at least on my system.

Reverting to `runit-void-20190906_3.x86_64` stops this from happening, and there were apparent changes done to how runit handles reboots, but turning everything into a reboot for me does not seem like a desired effect.

Revelant PR: https://github.com/void-linux/void-packages/pull/23668

Additional info:

`runit-void-20190906_3.x86_64` - `ls -l /run/runit/{reboot,stopit}` output:
```
ls: cannot access '/run/runit/reboot': No such file or directory
---x------ 1 root root 0 Aug 10 16:22 /run/runit/stopit
```

`runit-void-20200720_1.x86_64` - `ls -l /run/runit/{reboot,stopit}` output:
```
TODO in edit after re-update
```