Function rdo_partition_none

fn rdo_partition_none<T: Pixel>(
    fi: &FrameInvariants<T>,
    ts: &mut TileStateMut<'_, T>,
    cw: &mut ContextWriter<'_>,
    bsize: BlockSize,
    tile_bo: TileBlockOffset,
    inter_cfg: &InterConfig,
    child_modes: &mut ArrayVec<PartitionParameters, 4>,
) -> f64