Anti-spam punishment doesn't take into account if a warning was successfully delivered

[phunanon]

At the moment, uMod can be quite slow delivering a warning (and brief timeout) to users. This can cause users to receive a warning then to immediately be punished, as they already passed the threshold before the warning could be processed. There ought to be grace in this respect, that a warning must have been delivered and potentially even a period of a few seconds for the warning to sink in, before punishment is delivered.