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

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

Change-Id: I4081c0bcb1cca73df959d39fecf5da660178f211
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>