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: 251a3e8b am: 27c7322f

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



Change-Id: Ife93c3dde1ac0bc50df4c5d1fce1228d8c2ca5e9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>