compass doesn't work

I run fake compass to test the app with it, as described [here](https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/#compass-testing):

> ### Compass testing
>
> If your device does not contain a compass, you can run tests with:
>
> - If your device does not contain a real compass:
> - Add FAKE_COMPASS=1 to the environment of iio-sensor-proxy.service if your device does not contain a real one
> - Run the daemon manually with systemctl start iio-sensor-proxy.service
> - Verify that iio-sensor-proxy is running with systemctl or ps
> - As root, get a shell as the geoclue user with su -s /bin/bash geoclue
> - Run, as the geoclue user, monitor-sensor

Still, it has zero impact to the app.

I'm not sure if it's flatpak-related problem or not.

Start by reproducing the documented flow with FAKE_COMPASS=1, systemctl, the geoclue user shell, and monitor-sensor. Check whether the Flatpak environment can access the compass data and identify where the app consumes it; done means compass updates affect the app, with the Flatpak boundary identified if they do not.

Written by the indexing model from the issue text.