fn capacity_filled(
        &self,
        _config: &StateKeeperConfig,
        _tx_count: usize,
        _l1_tx_count: usize,
        _block_data: &SealData,
        _protocol_version: ProtocolVersionId,
    ) -> Option<f64> {
        None
    }
Returns fraction of the criterion's capacity filled in the batch.
If it can't be calculated for the criterion, then it should return `None`.
core/node/state_keeper/src/seal_criteria/mod.rs