Merge "docs: Explanation on "profile owner on the primary user"" into tm-dev am: de6b490d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20403491



Change-Id: I6a7969c7a36c9404a6e2ba854b3e83e32e4015e1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>