Ignore face settings extras when called by an external package.

Bug: 411418366
Flag: EXEMPT bug fix
Test: manual from any user not 0 (adb shell am start -a android.settings.FACE_SETTINGS --ei android.intent.extra.USER_ID 0)
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:486947205e05e83314bd76e4822af442ca82be9c)
Merged-In: I06193e421a140a90568251fc25baa7fc81c12d78
Change-Id: I06193e421a140a90568251fc25baa7fc81c12d78