[api] Device defined action responses (#12136)

Co-authored-by: J. Nick Koston <nick@home-assistant.io>
Co-authored-by: J. Nick Koston <nick@koston.org>

tests/integration/test_scheduler_recursive_timeout.py

@@ -79,7 +79,7 @@ async def test_scheduler_recursive_timeout(
         )
 
         # Call the service to start the test
-        client.execute_service(run_test_service, {})
+        await client.execute_service(run_test_service, {})
 
         # Wait for test to complete
         try: