Mitigate the security vulnerability by sanitizing the transaction flags. am: 3ea58dbc

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/20886664



Change-Id: Ib704fa0d4a35234e247eb6cc1f596defb4d7d23f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>