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

[automerger skipped] Merge "Don't attach private Notification to A11yEvent when user locked" into qt-dev am: 97626673 -s ours

am skip reason: skipped by user steell

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15080911

Change-Id: I9c0247a864abd028095375849208bbd9e83d4d27