chat-hook: fix double invite bug
|= [kind=?(%add %remove) pax=path who=(set ship)]
^- (list card)
?> ?=([* *] pax)
+ =/ owner (~(get by synced) pax)
+ ?~ owner ~
+ ?. =(u.owner our.bol) ~
%- zing
%+ turn ~(tap in who)
|= =ship
