Add config endpoint for scene (#28429)

* Add config endpoint for scene

* Add scenes to default config

* Fix test and add context to websocket service call

* Update scene.py

* Add tests

homeassistant/components/websocket_api/commands.py

@@ -132,7 +132,9 @@ async def handle_call_service(hass, connection, msg):
             blocking,
             connection.context(msg),
         )
-        connection.send_message(messages.result_message(msg["id"]))
+        connection.send_message(
+            messages.result_message(msg["id"], {"context": connection.context(msg)})
+        )
     except ServiceNotFound as err:
         if err.domain == msg["domain"] and err.service == msg["service"]:
             connection.send_message(