fix: should terminate http server correctly

[chenjiahan]

Summary

Terminate http server and await for the callback.

Related Links

• https://dev.to/gajus/how-to-terminate-a-http-server-in-node-js-ofk
• https://github.com/hunterloftis/stoppable
• [Bug]: HMR Memory leak when saving rsbuild.config.ts multiple times #2288

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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