Use systemd-homed by default for all user home dirs
We should consider making systemd-homed the default way to manage user home directories to benefit from all the features that it implements, especially around encryption.
See:
- https://wiki.archlinux.org/title/Systemd-homed
- https://systemd.io/HOME_DIRECTORY/
- https://www.freedesktop.org/software/systemd/man/latest/systemd-homed.service.html
This will likely require a Fedora change and investigation around the missing bits for integration, potential SELinux rules missing, etc.