Fixes admin's antag panel (#70022)
Fixes admin's antag panel (#70022)

Fixes get_team_antags and documents it

get_team_antags had a case where no defined antag_datum would let all antag datums pass by, used for admin's antagonist panels.
Bawhoppen/-tg-station,tgstation/tgstation,Bawhoppen/-tg-station,tgstation/tgstation,ShizCalev/tgstation,tgstation/tgstation,Bawhoppen/-tg-station,tgstation/tgstation,tgstation/tgstation,ShizCalev/tgstation,ShizCalev/tgstation,tgstation/tgstation,ShizCalev/tgstation,tgstation/tgstation,Bawhoppen/-tg-station,ShizCalev/tgstation,tgstation/tgstation,ShizCalev/tgstation,ShizCalev/tgstation,ShizCalev/tgstation,Bawhoppen/-tg-station,Bawhoppen/-tg-station,Bawhoppen/-tg-station,Bawhoppen/-tg-station