Merge "Remove all apps tabs elevation" into sc-dev am: 2c7c629704 am: d78ad7d377 am: 680ec044e5

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14682327

Change-Id: I9a442b41bcb3546e0ff9c1b42953bbf3eec7788e