Merge "Fix folders being light in dark mode." into sc-dev am: 5546b258c3 am: e7ce4caaed am: 8642568372

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

Change-Id: I8c9f2e35932fc6a7adabdcb043a71658d9d0d62f