Do not send AccessibilityEvent if notification is for different user.

Bug: 237540408
Test: BuzzBeepBlinkTest#testA11yCrossUserEventNotSent
Change-Id: I62a875e26e214847ec72ce3c41b4f2fa8e597e07
(cherry picked from commit a367c0a16a9070ed6bee3028ac5bbc967773ee8f)
Merged-In: I62a875e26e214847ec72ce3c41b4f2fa8e597e07
2 files changed