Merge "Renamin TaskbarContainerView to TaskbarDragLayer" into sc-dev am: 2f0595e76e am: 12829aee27

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

Change-Id: I65b0e03a8786f209516ad1bcd99b504d246fe91a