Fix userId propagation in IMMS.Lifecycle#onUserCreated()

This is a follow up CL to my previous CL [1], which aimed to unify

  UserManagerInternal.UserLifecycleListener

implementations.

While the idea itself is still valid, there was a bug in

  InputMethodManagerService.Lifecycle#onUserCreated(),

which wanted to pass

  int[]{ userId }

but ended up passing

  int[userId]{ 0, 0, 0, ... }.

This CL addresses the above issue.

 [1]: Ic66815a40a0aba2c4269b047ad9f8673df81d60d
      cb958f75

Bug: 352354308
Test: manually confirmed by adding a new user
Flag: EXEMPT bugfix
Change-Id: Ic4c48ff2c8a8cd68f03a428507fefe1212c1aa1c