Merge "Merge "Consolidate isTablet logic across Launcher and SysUI" into sc-v2-dev am: cc1e94a982" into sc-v2-dev-plus-aosp am: 48390fa1da

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15898421

Change-Id: I97ee7e3d695c8212ce6064dccc9405a936cf6122