Merge "Ensure page scrolls are initialized even for 0 children." into tm-dev...

Merge "Ensure page scrolls are initialized even for 0 children." into tm-dev am: 1e211e0c am: 0a3ef79f am: d57b486d am: 8cf13155

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/18625747



Change-Id: I22e35078966d8aec0058bc93347bd3a440029aca
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>