Add debugReason to BiometricUtils#tryStartingNextBiometricEnroll am: 715e337a am: c97269a9 am: 583301e4

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

Change-Id: I7831cf5980ab30d4bbd2636e7e039a8169846174