fix(server): base middleware redirect with search and hash

[cncolder]

Description

Retain search and hash when redirecting to the base path in the server base middleware. This is important when the initial search query is meaningful. e.g. an OAuth token. From http://localhost:3000/?code=12345 to http://localhost:3000/myapp/?code=12345

close #6573

Additional context

A minimal reproduce demo: https://stackblitz.com/edit/vitejs-vite-n6gkx1?file=vite.config.ts&terminal=dev

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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• Read the Contributing Guidelines.
• Read the Pull Request Guidelines and follow the Commit Convention.
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• Ideally, include relevant tests that fail without this PR but pass with it.

[cncolder]

Hi @antfu, ptal if you have a chance.

[Niputi]

please don't mention people
we will get to pull requests as we do