Cauterize surgery checks for lit implements, tweak lighter/flamethrowers/cautery so they deal burn when appropriate (#28141)

* stay cool

* Cautery is also weird like that too

code/game/objects/items/weapons/flamethrower.dm

@@ -231,11 +231,13 @@
 	to_chat(user, "<span class='notice'>You [lit ? "extinguish" : "ignite"] [src]!</span>")
 	lit = !lit
 	if(lit)
+		damtype = BURN
 		START_PROCESSING(SSobj, src)
 		if(!warned_admins)
 			message_admins("[ADMIN_LOOKUPFLW(user)] has lit a flamethrower.")
 			warned_admins = TRUE
 	else
+		damtype = initial(damtype)
 		STOP_PROCESSING(SSobj,src)
 	update_icon()
 

code/game/objects/items/weapons/lighters.dm

@@ -78,7 +78,7 @@
 	hitsound = "swing_hit"
 	force = 0
 	attack_verb = null //human_defense.dm takes care of it
-
+	damtype = initial(damtype)
 	update_icon()
 	if(user)
 		show_off_message(user)