[MIRROR] Prevent atmos runtimes during shuttle move [MDB IGNORE] (#18341)

* Prevent atmos runtimes during shuttle move (#72058)

During shuttle move we iterate over border turfs to clear their excited
state and active groups, but we never actually cleared it from the
opposite direction so the turfs bordering the border would still try to
process with the border turfs and would then runtime.

* Prevent atmos runtimes during shuttle move

Co-authored-by: Zephyr <12817816+ZephyrTFA@users.noreply.github.com>

code/modules/mapping/map_template.dm

@@ -159,10 +159,13 @@
 
 	var/list/border = block(locate(max(T.x-1, 1), max(T.y-1, 1),  T.z),
 							locate(min(T.x+width+1, world.maxx), min(T.y+height+1, world.maxy), T.z))
-	for(var/L in border)
-		var/turf/turf_to_disable = L
-		SSair.remove_from_active(turf_to_disable) //stop processing turfs along the border to prevent runtimes, we return it in initTemplateBounds()
-		turf_to_disable.atmos_adjacent_turfs?.Cut()
+
+	// iterate over turfs in the border and clear them from active atmos processing
+	for(var/turf/border_turf as anything in border)
+		SSair.remove_from_active(border_turf)
+		for(var/turf/sub_turf as anything in border_turf.atmos_adjacent_turfs)
+			sub_turf.atmos_adjacent_turfs?.Remove(border_turf)
+		border_turf.atmos_adjacent_turfs?.Cut()
 
 	// Accept cached maps, but don't save them automatically - we don't want
 	// ruins clogging up memory for the whole round.