Field only depended on by dead fields should be considered dead

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    • Type: Task
    • Resolution: Fixed
    • Priority: Major - P3
    • 9.0.0-rc0
    • Affects Version/s: None
    • Component/s: None
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    • Query Optimization
    • Fully Compatible
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      For example, both 'a' and 'b' should be considered dead here.

      [\{$set: {a: 1}}, \{$set: {b: "$a"}}, \{$project: {_id: 1}}]

            Assignee:
            Henri Nikku
            Reporter:
            Henri Nikku
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              Created:
              Updated:
              Resolved: