[miniflare] Fix Hyperdrive proxy servers not closing on dispose

[petebacondarwin]

The dispose() method in HyperdriveProxyController was missing a return statement in its .map() callback, so the Promises from server.close() were never passed to Promise.allSettled(). This meant the proxy net.Server instances were never actually waited on to close, potentially keeping the Node.js event loop alive and contributing to wrangler dev hanging on Ctrl-C.

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because: one-word fix (missing return); existing Hyperdrive tests confirm no regression
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: internal implementation fix with no user-facing API change

---

[changeset-bot]

🦋 Changeset detected

Latest commit: 352031c

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[workers-devprod]

Codeowners approval required for this PR:

• @cloudflare/wrangler

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• packages/miniflare/src/plugins/hyperdrive/hyperdrive-proxy.ts: [@cloudflare/wrangler]

[devin-ai-integration]

✅ Devin Review: No Issues Found

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[github-actions]

✅ All changesets look good

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commit: 352031c

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[petebacondarwin]

Superseded by #13515 which includes this fix (missing return in .map() callback in HyperdriveProxyController.dispose()).