Path aliases in declare module "@/xxxx" {} are not automatically resolved

[jinyu2022]

Describe the bug

When using path aliases (e.g., @/xxxx) within declare module statements, the dts does not resolve these aliases to their relative paths (e.g., ../../xxxx). Instead, the original alias path is retained in the generated declaration files (.d.ts).

Reproduction

https://stackblitz.com/edit/vitejs-vite-lacghvwp?file=src%2Fcounter.ts

Steps to reproduce

No response

System Info

System:
    OS: Windows 10 10.0.19045
    CPU: (12) x64 11th Gen Intel(R) Core(TM) i5-11400H @ 2.70GHz
    Memory: 3.01 GB / 15.65 GB
  Binaries:
    Node: 20.12.1 - E:\nodejs\node.EXE
    npm: 9.8.1 - E:\nodejs\npm.CMD
  Browsers:
    Edge: Chromium (131.0.2903.99)
    Internet Explorer: 11.0.19041.4355
  npmPackages:
    vite: ^6.0.1 => 6.0.2
    vite-plugin-dts: ^4.5.0 => 4.5.0

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