Merge "Change folderFillColor to colorBackgroundFloating." into sc-dev am: dfde41cf1e am: 2abc3933ed

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

Change-Id: I089e860de60059a64e8e934f90fdfb3f5519d11e