fix: fs serve only edit pathname (fixes #9148)

[sapphi-red]

Description

I should have only encode/decode pathname and leave other parts as-is.
#9148 was happening because encodeURIComponent(decodeURIComponent('?')) is %3F.

fixes #9148
refs #8804

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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[patak-dev]

A problem here is that vite allows direct access to files with ? in the middle. See

vite/packages/vite/src/node/plugins/resolve.ts

Line 401 in d2f02a8

// if we fould postfix exist, we should first try resolving file with postfix. details see #4703.

So if we only check the pathname, we may not hit the correct entry in the safe list (moduleGraph.safeModulesPath). So looks like the full URL needs to be used for ensureServingAccess

[sapphi-red]

It seems that that issue existed from before. sirv will only return /example when the request URL is /example?file.
So to fix this, IIUC we will need another middleware which does req.url = encodeURIComponent(decodeURI(req.url)) and calls sirv after that.