Use max/min to estimate ndv if not existing

[Xuanwo]

match (max, min) {
    (Datum::UInt(m), (Datum::UInt(n)) => ndv = ndv.min(m-n as _));
    (Datum::Int(m), (Datum::Int(n)) => ndv = ndv.min(m-n as _);
    _ => {}
}

Originally posted by @sundy-li in #17352 (comment)