Merge "Add null check for mCallback in AutoFillUI" into main am: 553c39b0e3

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/3336053

Change-Id: I2de42476564ce2a0dea81311dda0e67b90f2b79d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>