Merge "Read the starting surface icon size from framework" into sc-dev am: 630efccd7a am: 7f9488dcf2

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

Change-Id: Ie510c9d639d88b207f56e7ba95e262014daced81