NIU Actions: Change AppTheme to LauncherTheme am: d317f17273 am: e0feb07e72 am: d7e3f18701

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15413718

Change-Id: I0c6eeea5d942e2067b53f6de67a3d8f7dfa0068d