Merge "NIU Actions: Support Dark Mode and Landscape" into sc-dev am: f6e138cf21 am: 1ff0ae14c4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14753495

Change-Id: I99e2fd8ba23b9f9eec0dfcd296b824d39b5a1c7e