Merge "Add Multiuser team to the OWNERS of BackgroundUser* files." into main am: d1a03421ce

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3175799

Change-Id: I4a498821c7cde020877ede8fa2c9870a5627a9c4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>