Merge "Shorten and center TaskMenuView for landscape" into sc-v2-dev am: 5dded93a72

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15857414

Change-Id: Iab80cdbf68e75a16b64f4b8e9bae9a8602866cc6