Merge "Suppress "UnflaggedApi" lint for @TestApi." into main am: cdf207b2b6 am: d5d3d8c75e

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

Change-Id: I5506f69866686c4c017cf6bcfd537035b5635958
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>