Don't attach private Notification to A11yEvent when user locked

Fixes: 159624555
Test: manual, atest
Change-Id: Ib44f1d3695d2b31bee4f8ccae3f948c83f3b40b6
Merged-In: Ib44f1d3695d2b31bee4f8ccae3f948c83f3b40b6
(cherry picked from commit 54fbccc2934eae844550d851480d5448c2542f1d)
(cherry picked from commit 40574b32076bc1de5ef1a29daf693c3673e96ba1)
2 files changed