Merge "Return widget uid only when it is bound to screen" into tm-qpr-dev am: 731c7bb7

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20861026



Change-Id: I5f4b1866ebaf3c089001e65cfc92b5d47ed12a1a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>