[Bug]: import css with alias should be redirected

[noshower]

Version

System:
    OS: macOS 14.5
    CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 21.21 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Browsers:
    Chrome: 131.0.6778.205
    Safari: 17.5

Details

bundleless 模式下 ，import css 使用路径别名时，编译后的路径不对。

Reproduce link

https://github.com/user-attachments/files/18252212/rslib-project.zip

Reproduce Steps

复现例子：
rslib-project.zip