Merge "Make WallpaperMS bind wallpaper component PendingIntent immutable." into qt-qpr1-dev am: 985f7b1d53 am: 815ca2d7d8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12715923

Change-Id: Iab51ff4dddfb51fcc6f9c4a974751df0c307b1ca