Merge "Renamin TaskbarContainerView to TaskbarDragLayer" into sc-dev am: 2f0595e76e am: 1b72c0ea35

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14680570

Change-Id: Id67c295d6a09ea99b39497654fd1eb7cfce34bf5