perf: Pre-resolve type dispatch in sort-merge join comparators#20452

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andygrove:perf/smj-preresolved-comparator

Commits on Feb 20, 2026

perf: Pre-resolve type dispatch in sort-merge join comparators

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refactor: Use arrow_ord::make_comparator in sort-merge join

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perf: Cache DynComparators in sort-merge join compare loop

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