Merge "Set navBarDarkIntensity based on dark theme in SUW" into sc-v2-dev am: f9f90d6dc2 am: 5ebda13e05

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16482607

Change-Id: I8babe4bae067d8feab9d80c41b48994a33bf19df