Merge "[User Switcher] Change copy for phone dialog." into tm-qpr-dev am: c55617e3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20243800



Change-Id: Ifd17a322f3a44a7a1efce0ad1d9e9efb550fec25
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>