call-audio-idle-suspend-workaround not enabled by default
### Describe your issue
#### What's the expected behaviour?
call-audio-idle-suspend-workaround is enabled by default in fresh installs (and ideally on upgrade, but having instruct people to do that in an edge blog post is good enough)
#### What's the current behaviour?
it is disabled, even though it says preset: enabled
```
oneplus-fajita:~$ systemctl status --user call-audio-idle-suspend-workaround.service
_ call-audio-idle-suspend-workaround.service - Disable pulseaudio suspend-on-idle module during call
Loaded: loaded (/usr/lib/systemd/user/call-audio-idle-suspend-workaround.service; disabled; preset: enabled)
Active: inactive (dead)
```
#### How to reproduce your issue?
make a fresh install on op6/op6t
### What device are you using?
oneplus-fajita
### On what postmarketOS version did you encounter the issue?
* [x] edge (`master` branch)
* [x] `v25.06`
* [ ] `v24.12`
* [x] I confirm that the issue still is present after running `sudo apk upgrade -a`
### Additional information
It looks like in the build log, that we run "systemctl preset" before the service gets installed, and never afterwards.
https://builds.sr.ht/~postmarketos/job/1513919#task-img-328
```
unit policy has changed for call-audio-idle-suspend-workaround.service
no unit file found, skipping
```
issue