Merge "ShareTargets animations and styling." into sc-dev am: 1408c6459c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/13555898

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I348be0eaecac0c014c05b26b1aab7122b1594bff