Failed to resolve the relative background image url in css when there're (/) in it's parent paths.

[sapphi-red]

Describe the bug

It seems to fail to resolve the relative background image url in css when a component is located in a folder containing brackets.

A workaround is to wrap the url with double quotes:

.foo {
  background: url(./javascript.svg); /* before */
  background: url("./javascript.svg"); /* after */
}

Migrated from vitejs/vite-plugin-vue#512

Reproduction

https://stackblitz.com/edit/vitejs-vite-hebxocad?file=src%2Fmain.js,src%2F(foo)%2Findex.css,vite.config.js&terminal=dev

Steps to reproduce

No response

System Info

Stackblitz

  System:
    OS: Linux 5.0 undefined
    CPU: (8) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 0 Bytes / 0 Bytes
    Shell: 1.0 - /bin/jsh
  Binaries:
    Node: 18.20.3 - /usr/local/bin/node
    Yarn: 1.22.19 - /usr/local/bin/yarn
    npm: 10.2.3 - /usr/local/bin/npm
    pnpm: 8.15.6 - /usr/local/bin/pnpm
  npmPackages:
    vite: ^6.0.7 => 6.0.10

Used Package Manager

npm

Logs

No response

Validations

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• The provided reproduction is a minimal reproducible example of the bug.