Merge "Fix folders being light in dark mode." into sc-dev am: 5546b258c3 am: a6009c7395

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15082515

Change-Id: I0ff342ed289f9e99a1a6e7a1dbd7b1d09dcfba69