Immediately creates a new deployment of the version uploaded before the current one, across all routes and domains. This is a live production change, so expect a brief traffic shift while it propagates. Local dev is unaffected. Pass a version ID positionally to roll back further, as in `npx wrangler rollback 4d9c2b1af3e84a6d9b7c1e2f3a4b5c6d`.
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