Hide enrollment options that don't match requested biometric strength

When calling biometric enroll intent with biometric_strong, don't include
weak enrollments as options.

Bug: 265898482
Test: Tested manually by calling enrollment and verifying correct
options are shown
Test: atest BiometricEnrollActivityTest

Change-Id: I5fa650a593aee536955ae806f5963ffbdc135a2e
2 files changed