Merge "Fix a security issue in app widget service." into qt-dev am: 5a292b8bf4 am: f90c770087 am: af809557f8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20026360

Change-Id: I1dd4b4346229303d1e959ad06c98eb49a289e807
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>