Merge "Fix folders being light in dark mode." into sc-dev am: 5546b258c3 am: 328acc3b08 am: 5a2b4b9d56

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

Change-Id: Ie5d5429c9f652e715ddf396f20bfa29d292ad358