Merge "Suppress "UnflaggedApi" lint for @TestApi." into main am: cdf207b2b6 am: 714c778e41 am: ffb1064cbc

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/2813073

Change-Id: I823d23cee1f1ab42a3b5ac8bfe4a491d7febbfee
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>