Logging out is enabled on devices that doesn't support it yet

[kugiigi]

Steps to Reproduce

1. With a physical keyboard, press Ctrl+Alt+Del
2. Select Logout

Expected Results

Current user is logged out and the login screen is displayed

Actual Results

Lomiri gets stuck in the loading screen

Additional Comments

I believe there are times where logout also appears in the system indicator. Can't remember though if it actually logs out or it's just the text that shows logout.