wlroots,rootston: Mark them as broken until the first stable release

Upstream requested that we remove these packages until the first stable
release. More details are in #38344. This isn't ideal but it seems like
the best solution for now.
Close #38344.

pkgs/development/libraries/wlroots/default.nix

···
     license     = licenses.mit;
     platforms   = platforms.linux;
     maintainers = with maintainers; [ primeos ];
+    # Marked as broken until the first official/stable release (upstream
+    # request). See #38344 for the public discussion.
+    broken = true;
   };
 }