Webpack/rspack call load and transform with escaped paths

[edemaine]

Environment

unplugin 3.1.0

Reproduction

See PR #592. Without the changes to src, added test fails with message:

Error: load received escaped id: "C:\\Users\\edemaine\\Projects\\unplugin\\test\\fixtures\\hash-path\\src\\msg\u0000#hash.js"
    at assertUnescapedId (C:\Users\edemaine\Projects\unplugin\test\fixtures\hash-path\unplugin.js:11:11)
    at Object.load (C:\Users\edemaine\Projects\unplugin\test\fixtures\hash-path\unplugin.js:33:7)
    at Object.load (file:///C:/Users/edemaine/Projects/unplugin/dist/webpack/loaders/load.mjs:14:28)
    at LOADER_EXECUTION (C:\Users\edemaine\Projects\unplugin\node_modules\.pnpm\loader-runner@4.3.1\node_modules\loader-runner\lib\LoaderRunner.js:195:14)
    at runSyncOrAsync (C:\Users\edemaine\Projects\unplugin\node_modules\.pnpm\loader-runner@4.3.1\node_modules\loader-runner\lib\LoaderRunner.js:196:5)
    at iterateNormalLoaders (C:\Users\edemaine\Projects\unplugin\node_modules\.pnpm\loader-runner@4.3.1\node_modules\loader-runner\lib\LoaderRunner.js:258:2)
    at processResourceCallback (C:\Users\edemaine\Projects\unplugin\node_modules\.pnpm\loader-runner@4.3.1\node_modules\loader-runner\lib\LoaderRunner.js:282:5)
    at Object.processResource (C:\Users\edemaine\Projects\unplugin\node_modules\.pnpm\webpack@5.104.1_esbuild@0.27.2_webpack-cli@6.0.1\node_modules\webpack\lib\NormalModule.js:1094:14)

Describe the bug

Webpack for example escapes # in paths into \0#. These paths get passed into load and transform helpers, which makes it hard to actually load the file in a cross-platform way.

Additional context

No response

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