Function decode_template42_from_payload_list 

pub fn decode_template42_from_payload_list(
    payloads: &[&[u8]],
    params_list: &[Option<Template42Params>],
    width: usize,
    height: usize,
) -> Result<Vec<Option<Vec<f32>>>, String>

Batch decode a list of Section7 payload slices using corresponding template42 params. Returns a Vec of Option<Vec> where None indicates no params or decode skipped/failed.