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/modules/admin/verbs/debug.dm

@@ -280,7 +280,7 @@ But you can call procs that are of type /mob/living/carbon/human/proc/ for that
 		alert("That mob doesn't seem to exist, close the panel and try again.")
 		return
 
-	if(istype(M, /mob/new_player))
+	if(isnewplayer(M))
 		alert("The mob must not be a new_player.")
 		return
 
@@ -301,7 +301,7 @@ But you can call procs that are of type /mob/living/carbon/human/proc/ for that
 	var/mob/choice = input("Choose a player to play the pAI", "Spawn pAI") in available
 	if(!choice)
 		return 0
-	if(!istype(choice, /mob/dead/observer))
+	if(!isobserver(choice))
 		var/confirm = input("[choice.key] isn't ghosting right now. Are you sure you want to yank him out of them out of their body and place them in this pAI?", "Spawn pAI Confirmation", "No") in list("Yes", "No")
 		if(confirm != "Yes")
 			return 0