Fixes being able to use fire breath inside a mech (#22475)

* Update fire_breath.dm

* Update fire_breath.dm

* Update fire_breath.dm

* Update fire_breath.dm

* Update fire_breath.dm

Author: SapphicOverload

code/datums/mutations/fire_breath.dm

@@ -59,6 +59,17 @@
 	our_lizard.ignite_mob()
 	to_chat(our_lizard, span_warning("Something in front of your mouth catches fire!"))
 
+/datum/action/cooldown/spell/cone/staggered/fire_breath/make_cone(list/cone_turfs, atom/caster)
+	if(ismecha(caster.loc))
+		var/obj/mecha/lizard_mech = caster.loc
+		if(lizard_mech.enclosed) // inside an enclosed exosuit, everything inside gets cooked
+			for(var/mob/living/cooked in lizard_mech)
+				cooked.adjust_fire_stacks(cone_levels)
+				cooked.ignite_mob()
+				to_chat(cooked, span_warning("You're cooked alive by the flames!"))
+			return
+	return ..()
+
 /datum/action/cooldown/spell/cone/staggered/fire_breath/after_cast(atom/cast_on)
 	. = ..()
 	if(!isliving(cast_on))