Replace timeout errors with Face not recognized.

Also cleans up some invereted asserts in the tests.

Bug: 287011195
Test: atest AuthControllerTest
Test: manual (use BP test app with coex, authenticated without face and verify error message)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:504c55a3d1cb7381017624a0bcbde912165c816c)
Merged-In: Ia97e7f92000c82d121afba16a70ee3db33911815
Change-Id: Ia97e7f92000c82d121afba16a70ee3db33911815