refactor(func): replace GinWithValue with GinAppendValues

[j2rong4cn]

Description / 描述

原本GinWithValue是用来代替Gin.Set方法的，现在改成更合适的GinAppendValues

Motivation and Context / 背景

How Has This Been Tested? / 测试

Checklist / 检查清单

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  • OpenList-Frontend #XXXX
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[Copilot]

Pull request overview

This PR renames GinWithValue to GinAppendValues and changes its semantics so that values appended to the request context are visible through previously-held context references (mutating an embedded context.Context inside a new requestContext wrapper instead of replacing c.Request with a brand-new immutable context chain). All call sites in server/ are updated. The PR also includes an unrelated refactor of Cloud189PC.Put upload-method dispatch in drivers/189pc/driver.go.

Changes:

• Introduce requestContext wrapper and GinAppendValues (replacing GinWithValue); rename ContentWithValue to ContentWithValues.
• Update all middleware and handler call sites under server/ to use GinAppendValues.
• Unrelated: restructure Cloud189PC.Put upload-method selection and remove a duplicate秒传 branch.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
server/common/common.go	New requestContext + GinAppendValues with mutable-context semantics; rename helper to ContentWithValues.
server/webdav.go	Switch all GinWithValue calls to GinAppendValues.
server/middlewares/auth.go	Same call-site rename across Auth/Authn.
server/middlewares/check.go	Rename in StoragesLoaded.
server/middlewares/down.go	Rename in PathParse and Down.
server/middlewares/sharing.go	Rename in SharingIdParse/EmptyPathParse.
server/handles/fsread.go	Rename in FsList/FsDirs/FsGet/FsOther.
server/handles/fsmanage.go	Rename in FsRemoveEmptyDirectory.
server/handles/fsbatch.go	Rename in FsRecursiveMove/FsBatchRename/FsRegexRename.
server/handles/archive.go	Rename in FsArchiveMeta/FsArchiveList.
drivers/189pc/driver.go	Unrelated Put dispatch refactor; comment typo "妙传".

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