[CLOSED PR] Security health implants only send out an alert on death.

[Ikea]

The primary intent of this pr (and the one Im about to file in a bit) is to affect competent communicative sec teams the most while affecting non competent teams and individual sec offs minimally. This still allows security teams to retrieve the corpses of there coworkers, just makes it harder to stop there killing. When security is busy, generally they dont have time to tend to people on crit right away and will arrive when the person is dead or very close to it, so the alert on crit generally doesnt help them much. When security is more then able to deal with threats and eager and looking for them however.. it can lead to far too many sec offs converging in on an antag then they can reasonably deal with.