landscape: remove new group from group-view on leave
This fixes "ghost groups" if you leave a group soon after joining
(raw-poke-our %contact-pull-hook pull-hook-act)
;< ~ bind:m
(raw-poke-our %group-store remove)
+;< ~ bind:m
+ (raw-poke-our %group-view group-view-action+!>([%done rid]))
(pure:m !>(~))
