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

[automerger skipped] Merge "Don't attach private Notification to A11yEvent when user locked" into pi-dev am: fa06b865 -s ours am: f5dd6374 -s ours am: 155c60cd -s ours am: b082d717 -s ours am: 7fe81339 -s ours

am skip reason: skipped by user steell

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15081022

Change-Id: I15c5546b30febf5954c99d90c3ebbcfa5c45f8b7