Add migration code for SetKeyguardDisabledFeatures()

Test: Disable Keyguard features in TestDPC, enable flag, restart, check migration logs, check if the values are still on on TestDPC
Bug: 369350044
Bug: 336297680
Flag: android.app.admin.flags.set_keyguard_disabled_features_coexistence

Change-Id: Id5df67919dacb011c97b8527dd6f30fd5a73628c