Merge "Read the starting surface icon size from framework" into sc-dev am: 630efccd7a am: e909a01164

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14609921

Change-Id: I48b29916929c0e6ebae7e6cb0ca4a362557c07a8