fix: machine auth for GAQ enabled deployments (#29591)

superset/utils/machine_auth.py

@@ -126,6 +126,8 @@ class MachineAuthProvider:
             login_user(user)
             # A mock response object to get the cookie information from
             response = Response()
+            # To ensure all `after_request` functions are called i.e Websockets JWT Auth
+            current_app.process_response(response)
             current_app.session_interface.save_session(current_app, session, response)
 
         cookies = {}