Merge "launcher: hide grid options for foldables" into sc-v2-dev am: 0cba30e990 am: 298db67fd8

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/15472531

Change-Id: I82d22dcb706ca5ab2ba83a5994e801c3f369d022