fix: subways couldn't stop at endstation and would travel into limbo

src/base-environments/transition/code/fahrplan.gd

@@ -9,8 +9,8 @@ class_name Fahrplan extends Node3D
 	$parity_square : [["u4", $saint_exupery, "u1", $saint_exupery], []],
 	$saint_exupery : [["u4", $rosenthal], ["u1", $uni_main]],
 
-	$ministry : ["", null, "", null], # Endstation
-	$rosenthal : ["", null, "", null], # Endstation
+	$ministry : [null, null], # Endstation
+	$rosenthal : [null, null], # Endstation
 }
 
 ## List of all registered station nodes, used to unparent them