Properly resolve policy in getKeyguardDisabledFeatures

Test: atest android.devicepolicy.cts.KeyguardTest   android.devicepolicy.cts.KeyguardDisabledFeaturesTest
com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetKeyguardDisabledFeaturesLogged com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testSetKeyguardDisabledFeaturesLogged com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetKeyguardDisabledSecureCameraLogged com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testSetKeyguardDisabledSecureCameraLogged with flag on and off.
Flag: android.app.admin.flags.set_keyguard_disabled_features_coexistence
Bug: 385315558
Change-Id: I89f5bac7966cc24f4466488eaef6227fe3c2b134