protocol/unreal: bandaid fix for sending numerics to 3.2

protocol/unreal: bandaid fix for sending numerics to 3.2

The module requires having a SID configured, so numeric_sts(me.me, …)
always sends it, breaking quite a lot of stuff.

-> :grawity MOTD :chanserv
<- :00A 375 grawity :- services.cluenet.org Message of the Day -
-> :virgule.cluenet.org KILL 00A :virgule.cluenet.org (00A(?) <- services.cluenet.org)

In the long term, I think it would be better to have two protocol
modules, unreal34 with UIDs/SIDs and unreal32 without.