Merge "Correct the app bar color theme of Digital Assistant app" into sc-dev am: efd1c870f2 am: a7b3e18038

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/14912508

Change-Id: I99ee6b75a3c3257e6c104f1c9b19d847f7e8ac5d