Various fire bugfixes (#22431)

Fixes https://github.com/Aurorastation/Aurora.3/issues/22384.
Fixes https://github.com/Aurorastation/Aurora.3/issues/22389.
changes:
  - bugfix: "Fixes turf fires not spreading."
  - bugfix: "Fixes atmos fires not consistently igniting."
  - bugfix: "Fixes dead mobs burning forever."
  - bugfix: "Fixes fire_act() runtimes for multiple objects."

code/game/objects/effects/fire/fire.dm

@@ -154,7 +154,7 @@
 			var/turf/simulated/other_tile = get_step(T, direction)
 
 			// Exit the loop early if the checked tile is not a valid direction for the fire to spread.
-			if(!istype(other_tile) || (T.open_directions & direction) || other_tile.hotspot || other_tile.turf_fire) //Grab all valid bordering tiles
+			if(!istype(other_tile) || !(T.open_directions && direction) || other_tile.hotspot || other_tile.turf_fire) //Grab all valid bordering tiles
 				continue
 
 			other_tile.hotspot_expose(effective_temperature)

code/game/objects/items/toys.dm

@@ -178,10 +178,10 @@
 
 	burst()
 
-/obj/item/toy/balloon/fire_act(temperature, volume)
+/obj/item/toy/balloon/fire_act(exposed_temperature, exposed_volume)
 	. = ..()
 
-	if(temperature > T0C+100)
+	if(exposed_temperature > T0C+100)
 		burst()
 	return