manage color and exposure during rain e storm; remove wind from rice; disable fireflies on rain, snow or storm; remove key for fireworks test; add hero to railway_pool; manage train windows

core/biome_generator/rails.gd

@@ -264,8 +264,8 @@ func _input(event: InputEvent) -> void:
 	if event is InputEventKey and event.pressed and not event.echo:
 		if event.keycode == KEY_T:
 			_goto_next_stop()
-		elif event.keycode == KEY_F:
-			_test_manual_fireworks()
+		#elif event.keycode == KEY_F:
+			#_test_manual_fireworks()
 
 func _test_manual_fireworks() -> void:
 	if fireworks_scene == null or train_instance == null: return