Fix 2.4 damage test bug, with proof (#57560)
Fix 2.4 damage test bug, with proof (#57560)

I tracked down every source of damage, and just ran the test 100 times until it failed.

It was shrapnel.

I made the victim pierce immune, meaning they'll never take embeds.
JJRcop/tgstation,Jordie0608/tgstation,WJohn/-tg-station,JJRcop/tgstation,Razharas/-tg-station,MrStonedOne/tgstation,coiax/-tg-station,ShizCalev/tgstation,Jordie0608/tgstation,MicroWorldwide/SS13-TG-station,optimumtact/-tg-station,MicroWorldwide/SS13-TG-station,tgstation/-tg-station,Jordie0608/tgstation,JJRcop/tgstation,Cruix/-tg-station,GunHog/-tg-station,Cruix/-tg-station,CPTANT/-tg-station,MicroWorldwide/SS13-TG-station,Razharas/-tg-station,infinitystation/-tg-station,WJohn/-tg-station,tgstation/tgstation,GunHog/-tg-station,tgstation/-tg-station,TalkingCactus/tgstation,Jordie0608/tgstation,optimumtact/-tg-station,WJohn/-tg-station,optimumtact/-tg-station,Razharas/-tg-station,MicroWorldwide/SS13-TG-station,Bawhoppen/-tg-station,optimumtact/-tg-station,Jordie0608/tgstation,Razharas/-tg-station,infinitystation/-tg-station,MicroWorldwide/SS13-TG-station,Razharas/-tg-station,ShizCalev/tgstation,Bawhoppen/-tg-station,MrStonedOne/tgstation,coiax/-tg-station,WJohn/-tg-station,coiax/-tg-station,ShizCalev/tgstation,coiax/-tg-station,tgstation/tgstation,tgstation/tgstation,Cruix/-tg-station,tgstation/tgstation,infinitystation/-tg-station,GunHog/-tg-station,optimumtact/-tg-station,ShizCalev/tgstation,Razharas/-tg-station,Razharas/-tg-station,CPTANT/-tg-station,JJRcop/tgstation,Bawhoppen/-tg-station,optimumtact/-tg-station,coiax/-tg-station,CPTANT/-tg-station,Bawhoppen/-tg-station,tgstation/tgstation,Bawhoppen/-tg-station,MrStonedOne/tgstation,GunHog/-tg-station,TalkingCactus/tgstation,Cruix/-tg-station,Cruix/-tg-station,tgstation/tgstation,TalkingCactus/tgstation,Jordie0608/tgstation,CPTANT/-tg-station,MrStonedOne/tgstation,Bawhoppen/-tg-station,GunHog/-tg-station,Cruix/-tg-station,Cruix/-tg-station,coiax/-tg-station,CPTANT/-tg-station,WJohn/-tg-station,MicroWorldwide/SS13-TG-station,ShizCalev/tgstation,MrStonedOne/tgstation,CPTANT/-tg-station,JJRcop/tgstation,ShizCalev/tgstation,Jordie0608/tgstation,TalkingCactus/tgstation,JJRcop/tgstation,coiax/-tg-station,infinitystation/-tg-station,CPTANT/-tg-station,JJRcop/tgstation,optimumtact/-tg-station,Cruix/-tg-station,MrStonedOne/tgstation,MrStonedOne/tgstation,Jordie0608/tgstation,tgstation/tgstation,MicroWorldwide/SS13-TG-station,infinitystation/-tg-station,tgstation/-tg-station,GunHog/-tg-station,tgstation/tgstation,ShizCalev/tgstation,CPTANT/-tg-station,tgstation/-tg-station,MicroWorldwide/SS13-TG-station,Bawhoppen/-tg-station,GunHog/-tg-station,Razharas/-tg-station,infinitystation/-tg-station,infinitystation/-tg-station,Bawhoppen/-tg-station,MrStonedOne/tgstation,WJohn/-tg-station,infinitystation/-tg-station,ShizCalev/tgstation,WJohn/-tg-station