chore: fix flaky tests caused by the output_bytes column in copy into $location stmt

[dantengsky]

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Summary

Some test cases rely on the exact size of the parquet files generated by the COPY INTO $location statement, which is flaky. The size of the generated parquet files can vary across different versions of databend-query, as the parquet file metadata includes the version of databend-query that created the file.

Refer to: #17220

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is