sysutils/consolekit2: update to 1.2.2, latest upstream

This commit picks up several ideas:

• update to the 1.2.2 release from upstream (PR 252783)
• make the X11 option useful again; it was useless, so PR 255847 proposed removing the option -- X11 is mandatory -- but there was patches also to remove X11 entirely, for a Wayland-only experience. I've massaged it all until the option is useful and meaningfully selects for X11 (or not).

The original patch for optionalize-X11 came from amdmi3@,
and the "competing" one was -- via DankBSD, from unrelentingtech,
who also has other patches (obtained from GitHub) for CK2.

PR: 252783 255847
Reported by: Olivier Duchateau