Fix a security issue in app widget service.

Bug: 234013191
Test: atest RemoteViewsAdapterTest
Change-Id: Icd2eccb7a90124aca18a3dd463c3f79e3a595c20
Merged-In: Icd2eccb7a90124aca18a3dd463c3f79e3a595c20
(cherry picked from commit 263d7d0ba8818c471a27938c4e002bae33569f01)
2 files changed