I found myself idly wondering this myself.
Whilst I imagine employment contracts for the civil service are quite broad, I doubt they can be stretched to "here's your tickets, you're off to Rwanda for a year matey".
(If the vaccination regime is what it was when I went to that neck of the woods, you needs good 2-3 months headstart. And the yellow fever jab really isn't a party).
Also - as the gentleman on QT rather helpfully pointed out. All any asylum seeker now has to do is claim to be from DRC (because there's no way to check they aren't) and the while scheme will again run into the brick wall that is the courts.