fix: apply pruning pipeline in EXPLAIN to avoid OOM

[dqhl76]

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Summary

This PR extends support for the pruning pipeline to EXPLAIN statements when enable_prune_pipeline=1. The pruning pipeline support streaming reading block metas to prevent OOM risks for large or numerous blocks.

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 

[BohuTANG]

@dqhl76 This was closed without explanation. Could you clarify why?

[dqhl76]

Misoperation, I recently want to continue pushing this PR move.