Get mongosync in a state where it can start running in Antithesis again.
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Overall, we are in a good state to enable this testing again & update the suite to close represent existing suites. I've added the work that has been done & some potential TODO's.

Write-Up: https://docs.google.com/document/d/1wkKG3I-5WQ86I2QFmjQlTEZP-uSA_d-BL2dMoLD4qjs/edit#heading=h.qenqef9121rl