Merge "[ShellTransit] Reset alpha in buildFinishTransaction" into tm-qpr-dev am: bcccf96a

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/20808017



Change-Id: Ifbf710568a4b1cefed95f3fcd2a3f2e7550a17e2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>