Verify that StreamingAggStage handles yields correctly

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    • Type: Task
    • Resolution: Unresolved
    • Priority: Major - P3
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      Once StreamingAggStage is running end-to-end, test that yields that happen while the stage is running result in valid behavior.

      Some interesting cases:

      1. Yield between two emitted groups of a cluster
      2. Yield inside the child's getNext() right after a cluster boundary
      3. Confirm accumulator state and group keys survive save/restore

      Context: https://github.com/10gen/mongo/pull/63934#discussion_r4427939868

            Assignee:
            Unassigned
            Reporter:
            Anna Veselova
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              Created:
              Updated: