test: harden relevance gate regressions

tests/test_event_manager_relevance_gate_regressions.py

@@ -35,6 +35,17 @@ class EventManagerRelevanceGateRegressionTests(unittest.TestCase):
         self.listenerPatch.start()
         self.addCleanup(self.listenerPatch.stop)
 
+        self.steamAppPatch = mock.patch.object(event_manager.EventManager, "_isSteamApp", return_value=False)
+        self.steamNotificationPatch = mock.patch.object(
+            event_manager.EventManager,
+            "_isSteamNotificationEvent",
+            return_value=False,
+        )
+        self.steamAppPatch.start()
+        self.steamNotificationPatch.start()
+        self.addCleanup(self.steamAppPatch.stop)
+        self.addCleanup(self.steamNotificationPatch.stop)
+
         self.originalActiveScript = cthulhu_state.activeScript
         self.originalLocusOfFocus = cthulhu_state.locusOfFocus
         self.addCleanup(self._restore_state)