Fixes adding antag huds to newplayers. (#46555)

code/modules/antagonists/_common/antag_hud.dm

@@ -20,9 +20,11 @@
 		CRASH("join_hud(): [M] ([M.type]) is not a mob!")
 	if(mind_hud) //note: please let this runtime if a mob has no mind, as mindless mobs shouldn't be getting antagged
 		mind_hud.leave_hud(M)
-	add_to_hud(M)
-	if(self_visible)
-		add_hud_to(M)
+
+	if(ANTAG_HUD in M.hud_possible) //Current mob does not support antag huds ie newplayer
+		add_to_hud(M)
+		if(self_visible)
+			add_hud_to(M)
 
 	if (!team_hud)
 		M.mind.antag_hud = src

code/modules/mob/dead/new_player/new_player.dm

@@ -10,6 +10,7 @@
 
 	density = FALSE
 	stat = DEAD
+	hud_possible = list()
 
 	var/mob/living/new_character	//for instant transfer once the round is set up