Merge "Get PiP round corner radius from WMShell" into sc-dev am: e74e32ab4c am: 54d3165b40

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

Change-Id: Ic89d50b9293a922702a07ac7d3c663d1410c0bf7