Merge "Get PiP round corner radius from WMShell" into sc-dev am: e74e32ab4c am: 2ab5979c29 am: c9261ae5b0

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14343433

Change-Id: I2af93d0a8cc42d23b183dc8ed7a259f145be687d