Merge "Calculate the position from start bounds for auto-enter PiP" into sc-dev am: 5a2a6e7325 am: 635b3d09c4 am: 86aaa3b970

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

Change-Id: Ic8a428fcd2a72cabc06bea68d4165f926512e435