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

[automerger skipped] Merge "Don't attach private Notification to A11yEvent when user locked" into oc-mr1-dev am: 075e4bbb -s ours am: cbe9be1e -s ours am: 7253e1ee -s ours

am skip reason: Merged-In Ib44f1d3695d2b31bee4f8ccae3f948c83f3b40b6 with SHA-1 49be6ee4 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/15081373

Change-Id: Ifc4ffcffbfff2b72415fa706a9aebca120dcb8d6