refactor: (do not merge) adjust pruning strategy

[dantengsky]

I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

perf only

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 

[github-actions]

Docker Image for PR

• tag: pr-19326-809c75d-1769246497

note: this image tag is only available for internal use.

[github-actions]

Docker Image for PR

• tag: pr-19326-809c75d-1769249605

note: this image tag is only available for internal use.

[github-actions]

ClickBench Report

• hits: https://benchmark.databend.com/clickbench/pr/19326/21313000146/hits.html
• tpch100: https://benchmark.databend.com/clickbench/pr/19326/21313000146/tpch100.html
• tpch1000: https://benchmark.databend.com/clickbench/pr/19326/21313000146/tpch1000.html