Function apply_ree 

fn apply_ree<T: ArrayOrd>(
    op: Op,
    l: T,
    l_info: &ReeInfo<'_>,
    r: T,
    r_info: &ReeInfo<'_>,
) -> BooleanBuffer

Dispatch op for a REE-vs-REE comparison (no dictionary on either side) using segment-based bulk comparison.