Merge "Allapps layout polishes" into sc-dev am: e67baf65f2 am: 3f28283be1 am: 9a4650a321

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15190139

Change-Id: I497455a164d79fcdb269d7e057f7efbeef4b0a8f