Fixes liches not blocking roundend properly. (#31851)

code/game/gamemodes/wizard/wizard.dm

@@ -45,7 +45,11 @@
 /datum/game_mode/wizard/check_finished()
 	for(var/datum/mind/wizard in wizards)
 		if(isliving(wizard.current) && wizard.current.stat!=DEAD)
-			return ..()
+			return FALSE
+	
+	for(var/obj/item/phylactery/P in GLOB.poi_list) //TODO : IsProperlyDead()
+		if(P.mind && P.mind.has_antag_datum(/datum/antagonist/wizard))
+			return FALSE
 
 	if(SSevents.wizardmode) //If summon events was active, turn it off
 		SSevents.toggleWizardmode()