Don't Force Normal Projection Optimization to Have Filter

[Michicosun]

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Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):

This patch changes when optimizeUseNormalProjections can be used and allows a specific case where nothing was filtered, but the projection's sorting key can help remove the sorting step of a query.

[clickhouse-gh]

Workflow [PR], commit [0524f16]

Summary: ✅

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AI Review

Summary

This PR relaxes optimizeUseNormalProjections so normal projections can be considered when a query has no filter but has an outer ORDER BY that may benefit from read-in-order, and it adds a stateless regression test for that path. I did not find unresolved correctness, safety, or evidence gaps in the current diff.

Final Verdict

• Status: ✅ Approve

[clickhouse-gh]

LLVM Coverage Report

Metric	Baseline	Current	Δ
Lines	84.10%	84.10%	+0.00%
Functions	91.10%	91.10%	+0.00%
Branches	76.50%	76.50%	+0.00%

Changed lines: 100.00% (12/12) · Uncovered code

Full report · Diff report