More istypes replaced with helpers (#20767)

* shouldn't you be merging these by now

* my oh my do we have a lot of these

* a fellow pedantic shit

code/controllers/subsystem/shuttles.dm

@@ -234,7 +234,7 @@ var/datum/subsystem/shuttle/SSshuttle
 	var/callShuttle = 1
 
 	for(var/thing in shuttle_caller_list)
-		if(istype(thing, /mob/living/silicon/ai))
+		if(isAI(thing))
 			var/mob/living/silicon/ai/AI = thing
 			if(AI.stat || !AI.client)
 				continue

code/controllers/subsystem/ticker.dm

@@ -349,7 +349,7 @@ var/datum/subsystem/ticker/ticker
 				SSjob.EquipRank(player, player.mind.assigned_role, 0)
 	if(captainless)
 		for(var/mob/M in player_list)
-			if(!istype(M,/mob/new_player))
+			if(!isnewplayer(M))
 				M << "Captainship not forced on anyone."