[8.x] ESQL: Lazy collection copying during node transform (#124424) #124530
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* ESQL: Lazy collection copying during node transform A set of optimization for tree traversal: 1. perform lazy copying during children transform 2. use long hashing to avoid object creation 3. perform type check first before collection checking Relates elastic#124395
costin added :Analytics/ES|QL 
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Backports the following commits to 8.x: