fix(test): fallback event test cases

tests/test_clock_handler.py

@@ -94,7 +94,7 @@ class TestClockHandler(unittest.TestCase):
         self.timetable.timetable = [ts1, ts2, ts3, ts4]
 
         clockHandler = ClockInfoHandler(self.engine)
-        clockHandler.on_fallback_active(ts1, "Station Fallback")
+        clockHandler.on_fallback_active(ts1)
 
     def test_clock_on_play(self):
         print(self._testMethodName)

tests/test_engine_event_dispatcher.py

@@ -139,7 +139,7 @@ class MockEventHandler:
         print(f"called mocked '{m}'")
         self.call_stack.append(m)
 
-    def on_fallback_active(self, timeslot, fallback_name):
+    def on_fallback_active(self, timeslot):
         """
         Call when a fallback is activated for the given timeslot.
 
@@ -216,7 +216,7 @@ class TestEventDispatcher(unittest.TestCase):
         dispatcher.on_timeslot_end(None)
         dispatcher.on_play(item)
         dispatcher.on_stop(None)
-        dispatcher.on_fallback_active(None, None)
+        dispatcher.on_fallback_active(None)
         dispatcher.on_queue(item)
         dispatcher.on_sick(None)
         dispatcher.on_resurrect(None)