Defining Part 4 - Code cleanup toward defines (... and the rest) (#19388)

* I wasn't done

* nits

code/modules/mob/language.dm

@@ -598,7 +598,7 @@
 			M.show_message("[message_start_dead] [message_body]", 2)
 
 	for(var/mob/living/S in GLOB.alive_mob_list)
-		if(drone_only && !istype(S,/mob/living/silicon/robot/drone))
+		if(drone_only && !isdrone(S))
 			continue
 		else if(isAI(S))
 			message_start = "<i><span class='game say'>[name], <a href='byond://?src=[S.UID()];track=\ref[speaker]'><span class='name'>[speaker.name]</span></a>"