Merge "Unifying icon loading methods" into sc-dev am: 44ba9f2e14 am: 2244fe9647

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14200836

Change-Id: Ied2920b98929de146d3a8ce07ea65b22e56c6cfd