Hide overlay windows when showing phone account enable/disable screen. am: a7d57ace58 am: 03d32b7ee6 am: fdbbe6bf70 am: f745f72a03 am: 46a616d207

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/services/Telecomm/+/20069028

Change-Id: I5a910d8047b137795b2aaf2d78d9c551465d3f70
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>