Merge "Hide multi user switcher on keyguard screen when disabled" into tm-dev am: 78ad1dd6 am: a2679fa3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18798706



Change-Id: Ibdc7d17eb79709c8ee254fca2083b9f2ccbe3df5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>