fix: /@fs/ dir traversal with escaped chars (fixes #8498)

[sapphi-red]

Description

This was happening becasue Vite uses decodeURI and sirv uses decodeURIComponent.

vite/packages/vite/src/node/server/middlewares/static.ts

Line 83 in e53c029

const url = decodeURI(req.url!)

vite/packages/vite/src/node/server/middlewares/static.ts

Line 126 in e53c029

let url = decodeURI(req.url!)

https://github.com/lukeed/sirv/blob/886cc962a345780cd78f8910cdcf218db2a8d955/packages/sirv/index.js#L171

Maybe sirv should use decodeURI instead of decodeURIComponent. But I think changing it have a possibility to break Vite somewhere. So I chose to do like this PR.

fixes #8498

Additional context

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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