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When lowering PathTraverse within EvalFilter, special handling is required for paths with numeric components. See SERVER-49852 for extensive test cases that show how paths with numeric components match against different documents.
The goal of this task is to update ABT->SBE lowering so that it generates whatever is necessary to produce correct results for the test cases listed in SERVER-49852.
This task has some overlap with SERVER-62961. Both this task and SERVER-62961 require changes to how EvalFilter paths should be lowered down to SBE, and so it would probably make sense to design a solution to both tasks at the same time.
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