Avoid using MANDATORY_BIOMETRICS bit if flag is not enabled

Flag: android.hardware.biometrics.flags.mandatory_biometrics
Bug: 370757426
Test: N/A
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:aa322bc4f7211117cd57c559e2e55dae1184752f)
Merged-In: I4e2a72a80f68579d60466e859370b6fd93a8cd23
Change-Id: I4e2a72a80f68579d60466e859370b6fd93a8cd23
2 files changed