feat(query): rewrite outer join exclusion filters as anti joins

[forsaken628]

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Summary

• Rewrite LEFT/RIGHT OUTER JOIN exclusion patterns into anti joins when IS NULL targets a regular equi-join key on the null-extended side.
• Preserve residual filters and output schemas by reconstructing removed-side columns as typed NULL values; exclude nullable payload tests and null-safe join conditions.
• Harden EvalScalar behavior with correct physical column pruning, dependency-safe merging, constant-overwrite preservation, and derived statistics without stale ColumnStat,
  TopN, or CMS data.
• Add SQL-driven optimizer goldens, SQL logic coverage for LEFT/RIGHT JOIN and NULL semantics, focused EvalScalar unit tests, and optimizer rule-testing guidance.

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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