Merge "Allapps layout polishes" into sc-dev am: e67baf65f2 am: d733ce3f94 am: 5a6836c999

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

Change-Id: I5bfbe4e30b2e99662dfc1e9f5b6f5080f786331b