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

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

Change-Id: I96a85a2d1166a04240666f5c4ce39a6740e1c56b