Refactor SortPushdown using the standard top-down visitor and using `EquivalenceProperties`#14821

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wiedld wants to merge 10 commits intoapache:mainfrom influxdata:wiedld/refactor-sort-pushdown

+109-75

Commits on Feb 22, 2025

refactor: have sort pushdown use transform_down, and provide minor refactor in sort_pushdown_helper to make it more understandable
wiedld
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test: inconsequential single change in test
wiedld
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Commits on Feb 25, 2025

Commits on Feb 28, 2025

Revert "fix: have orderings include constants which are heterogenius across partitions"
wiedld
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test: temporary commit to demonstrate changes that only occur with no partition by (in window agg), and when aggregating on an unordered column
wiedld
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