[auth-driver] Don't await BatchClient init (#9949)
[auth-driver] Don't await BatchClient init (#9949)

* [auth-driver] Don't await BatchClient init

* [auth-driver] declare user_creation_loop
hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail,hail-is/hail