Merge "Change folderFillColor to colorBackgroundFloating." into sc-dev am: dfde41cf1e

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14754919

Change-Id: I7d4b2b8f1dbd68032677134a20b09b2a28fdb2b5