[Improve] Strengthen managed binary installation (#1059)

* refactor: extract managed binary installation infrastructure

Refs #1055

* fix: address managed binary review feedback

* fix: address managed binary review feedback

* test: cover managed binary cleanup boundaries

* fix: finalize managed binary download handling

* test: mirror download stream close events

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Co-authored-by: Naved Merchant <14171946+navedmerchant@users.noreply.github.com>