#1058 Don’t answer with a <service-unavailable/> to chatstates sent to the domain JID
Description of feature:
Add a handler on the bare JID of VirtualHosts to ignore unhandled messages.
With mod_watchregistrations, the domain JID sends a message to every admin. If their client sends chatstates regardless of the disco#info (what poezio now does, in order to avoid resource locking) they will receive an error message back every time they switch tabs.