Merge "Revert "Mainline: removed legacy UI for network selection mode."" into...

Merge "Revert "Mainline: removed legacy UI for network selection mode."" into rvc-dev am: 518ffd7c am: d32cb38e am: 24d6bb3e am: d5543561

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/11837795

Change-Id: Iadae0648c7ed118de8fe398450a4dd60c879561f