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: c2f0ab12 am: 86aa01ea

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

Change-Id: Iefd7c8b53d1b57ecaafde5d9c4756d4f5338cfd4