SceneQuery: UWorld::SweepSingleByChannel doesn't return BoneName on skeletal meshes with per-poly collision enabled

Scene queries when encountering skeletal meshes with per-poly collision enabled do not return a bone name in the HitResult. Returning the BoneName always or having it as an option via FCollisionQueryParams would be useful.

For example, CharacterMovementComponent relies on the BoneName when the character is using a SkeletalMeshComponent as a base. Finding the BoneName of the geo under the character would add support for walking on skeletal meshes with per-poly collision enabled. Because the query currently doesn't return the BoneName, walking on skeletal meshes with per-poly collision and whose bones are animated doesn't work as the bone's movement isn't taken into account.