Merge "Prevent WallpaperManager#getBitmap return recycled bitmap." into sc-v2-dev am: d4468037c7 am: e386c935ab

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15824230

Change-Id: I55a0ab040e92f809731a22b7c967768eaae3e7d2