Merge "Write default accessibility service only when user enter into...

Merge "Write default accessibility service only when user enter into corresponding page." into tm-dev am: 7a5ade7e am: 7d22d246

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/17655026



Change-Id: Ia72133a62fce12dfd355abb618e1af12a0a998eb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>