Wake deadline consumers on enqueue instead of polling every second

server/packages/tavolo-platform/tests/helpers.py

@@ -220,6 +220,7 @@ class DummyEngine(GameEngine):
 
 def make_platform(
     engines: Sequence[GameEngine] = (DummyEngine(),),
+    heartbeat_ms: int = 50,
 ) -> Tuple[KayaApp, Platform, TortoiseMixin]:
     """Build a throwaway app + platform wired with in-memory stores."""
     registry = GameRegistry(engines)
@@ -251,7 +252,7 @@ def make_platform(
     scheduler = DeadlineScheduler(
         game_store,
         registry,
-        heartbeat_ms=50,
+        heartbeat_ms=heartbeat_ms,
         context_binder=tortoise_mixin.ensure_context,
     )
     platform = Platform(