Merge pull request #9453 from Ghommie/Ghommie-cit226

Mitigates the ghost roles/mid-round antag lock out for suicide/cryo. And related fixes.

code/controllers/subsystem/pai.dm

@@ -69,6 +69,10 @@ SUBSYSTEM_DEF(pai)
 					candidate.comments = copytext(sanitize(candidate.comments),1,MAX_MESSAGE_LEN)
 
 			if("submit")
+				if(isobserver(usr))
+					var/mob/dead/observer/O = usr
+					if(!O.can_reenter_round())
+						return FALSE
 				if(candidate)
 					candidate.ready = 1
 					for(var/obj/item/paicard/p in pai_card_list)
@@ -148,6 +152,8 @@ SUBSYSTEM_DEF(pai)
 				continue
 			if(!(ROLE_PAI in G.client.prefs.be_special))
 				continue
+			if(!G.can_reenter_round()) // this should use notify_ghosts() instead one day.
+				return FALSE
 			to_chat(G, "<span class='ghostalert'>[user] is requesting a pAI personality! Use the pAI button to submit yourself as one.</span>")
 		addtimer(CALLBACK(src, .proc/spam_again), spam_delay)
 	var/list/available = list()