Merge "Support to launch app pair from overview with recorded split ratio."...

Merge "Support to launch app pair from overview with recorded split ratio." into sc-v2-dev am: 71b7d153 am: 925b1c3f

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/16331944

Change-Id: I5e9eec07c468c19d23e9511771072c29fa7b3eae