Incomplete user rights for Administrator (Odin)

When you first setup system and login by default user has granted administrator rights, at least this is what this plugins says. But, if you check on `users-admin` app it shows *custom*. I didn't check precisely what is going on, but my guess is that *user* is not added to some groups or is missing proper access to some folders. I tested this with `gnome-logs` app, but I believe it can also cause unexpected behavior for other apps.

## Expected Behavior
User *Administrator* should have proper access.

## Steps to Reproduce
Install `gnome-logs` app and launch it (flatpak or deb, does not matter). App will pop an error `Unable to read system logs`. If you start `sudo gnome-logs` it will be able to read system logs. Now, if you launch `users-admin` and change user rights from *Custom* to *Administrator* it will also solve this problem.

### Logs
n/a

## Platform Information
OS: elementary OS 6 Odin x86_64
Host: Aspire VX5-591G V1.08
Kernel: 5.11.0-34-generic

### Screens

Reproduce the issue on elementary OS 6 Odin by launching gnome-logs as the default Administrator, then compare the result after changing the account from Custom to Administrator in users-admin. Investigate the account rights and access differences; done means the default Administrator is shown correctly and can read system logs without manually changing rights.

Written by the indexing model from the issue text.