Add debugReason to BiometricUtils#tryStartingNextBiometricEnroll am: 715e337a am: c97269a9 am: 7863a996

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/15536197

Change-Id: I27d66045f009bdc5da681136cb7436f71d59065f