Fix potential resource leak in `CloudFetchQueue`#624

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varun-edachali-dbx wants to merge 3 commits intomainfrom

fix-download-leak

Commits on Jul 4, 2025

add close() for Queue, add ResultSet invocation
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move Queue closure to finally: block to ensure client-side cleanup regardless of server side state
varun-edachali-dbx
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add unit test assertions to ensure Queue closure
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