chore: change Result to Option to avoid bring error stack

[BohuTANG]

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Summary

   if parts.partitions.len() == 1 {
            let part = parts.partitions[0].clone();
            if let Ok(part) = StreamTablePart::from_part(&part) {
                parts = part.inner();
                base_block_ids = Some(part.base_block_ids());
            }
        }

if let Ok(part) = StreamTablePart::from_part(&part) { will always bring the error stack each time.

• Closes #issue

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This change is