Merge "Calculate the position from start bounds for auto-enter PiP" into sc-dev am: 5a2a6e7325 am: 635b3d09c4

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14940622

Change-Id: I543b7b6dd1849f01d262a4581891ee6a4be5a9ed