[automerger skipped] Merge "Don't attach private Notification to A11yEvent...

[automerger skipped] Merge "Don't attach private Notification to A11yEvent when user locked" into rvc-dev am: abd2fc4b -s ours am: 35bace67 -s ours am: dc4d2b93 -s ours

am skip reason: Merged-In Ib44f1d3695d2b31bee4f8ccae3f948c83f3b40b6 with SHA-1 40574b32 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15081021

Change-Id: I907d24833eb2dae88a58ceaced380b15cc9e5a76