The whitelist/ban/kick mutations reported a canned success message and threw
away the server's reply, so a refused command still read as done: live, the
vanilla server answers "That player does not exist" for a name it has never
seen (any player who has not joined yet), while the panel said the player had
been whitelisted/banned. api.ts documents these replies as "surfaced verbatim
as confirmation"; now they are. The localized string stays as the fallback
for a silent server.
Lemon-miaow