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/events/wizard/petsplosion.dm

@@ -13,5 +13,5 @@
 	if(activeFor >= 30 * countdown) // 0 seconds : 2 animals | 30 seconds : 4 animals | 1 minute : 8 animals
 		countdown += 1
 		for(var/mob/living/simple_animal/F in living_mob_list) //If you cull the heard before the next replication, things will be easier for you
-			if(!istype(F, /mob/living/simple_animal/hostile))
+			if(!ishostile(F))
 				new F.type(F.loc)