do not test permeable solid mask on the elevator case in master

This messes up so many things as one could have expected. Instead we do the sensible thing and enable it only in the test scenario. For future reference all sequences involving an elevator and NPC clonks are broken with this feature.

planet/Objects.ocd/Structures.ocd/Elevator.ocd/Case.ocd/Script.c

@@ -93,8 +93,6 @@ private func Initialize()
 	front->SetAction("Attach", this);
 	back->SetAction("Attach", this);
 
-	SetHalfVehicleSolidMask(true);
-
 	return _inherited(...);
 }
 

planet/Tests.ocf/PermeableSolidMasks.ocs/System.ocg/Basement.c

@@ -1,8 +1,9 @@
 #appendto Basement
 #appendto WoodenBridge
+#appendto ElevatorCase
 
 protected func Initialize()
 {
 	_inherited();
 	SetHalfVehicleSolidMask(true);
-}
+}