Merge "Remove elevation from Task in Overview." into sc-dev am: fe7fb09b90

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13547665

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic08a3494240ee0fb31ff03db3cefea6b9ca69eb8