Use Wayland for installer session

[danirabbit]

Problem

We want to migrate from X11 to Wayland and this is one of the sessions we need to migrate :)

Proposal

Use a wayland session of the greeter compositor in the installer session

Prior Art (Optional)

No response

[danirabbit]

Marking this as blocked since we're waiting on new A11y stack to not lose certain screen reader features

[megatux]

Is this the reason I can only try the Demo session with X11 and not Wayland when using the daily build ISOs?