Merge "Fix that AccessibilityServiceConnection#serviceInterface may be invalid in the async" am: 700fb9ebeb am: bf6cc67976 am: 481964bf2c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1870459

Change-Id: I0677c6a1f3b6f605d2c58a721a075f2a1630bbe3