Merge "Add a separate line at the bottom of list area in output switcher" into...

Merge "Add a separate line at the bottom of list area in output switcher" into rvc-dev am: 02e311e5 am: fc3f730d

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/11900663

Change-Id: I73bbbb19f344da5e35a50190ef175e059f4e47dc