29/n: Fix EnrollClient onClientFinished

EnrollClient was not updated to use the FinishCallback properly.
This CL fixes that.

Bug: 157790417

Test: Enroll on fingerprint/face device. Notice authenticatorId is
      updated.
Change-Id: Iba47ac2803c1281e4424316900b1c47c8c91bc54
2 files changed