Merge "Set the widgets pickers' width to at most 80% of screen width on large screen devices" into sc-v2-dev am: c548ab92f9 am: 3648788c16

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15106955

Change-Id: I588e950de7a870f2ad7305f0f7fef61c11b6a656