rsbuild `autoCodeSplitting` is not work in windows platform

[json-q]

Which project does this relate to?

Router

Describe the bug

I forked the rspack example from the repository and reproduced the issue. On Windows, autoCodeSplitting doesn't seem to work properly.

I also tested with Vite, and autoCodeSplitting works normally on Windows in that environment.

This is almost identical to #2364, except I'm using rsbuild. I've also created a GitHub Action example following the same pattern - hope it might help.

related issue: #2167. Although it has been marked as fixed, are there still some issues remaining?

Your Example Website or App

https://github.com/json-q/reproduce-tanstack-rsbuild-code-splitting

Steps to Reproduce the Bug or Issue

1. use repository with rspack example
2. run pnpm build on Windows

In Github Action

Linux Output

File (web)                             Size       Gzip   
dist/static/js/async/71.ba88b980.js    0.35 kB    0.24 kB
dist/static/js/async/478.40e10a1a.js   0.36 kB    0.25 kB
dist/index.html                        0.43 kB    0.26 kB
dist/static/js/index.df5ddaa1.js       3.9 kB     1.9 kB
dist/static/css/index.b98cee4f.css     7.7 kB     2.1 kB
dist/static/js/474.06473f22.js         78.7 kB    25.4 kB
dist/static/js/lib-react.2bce8fdf.js   189.9 kB   60.0 kB

                              Total:   281.3 kB   90.1 kB

Windows Output

File (web)                             Size       Gzip   
dist\index.html                        0.43 kB    0.27 kB
dist\static\js\index.4ba93d7a.js       2.3 kB     1.2 kB
dist\static\css\index.7d26e347.css     7.7 kB     2.1 kB
dist\static\js\909.fbf40b36.js         77.9 kB    25.1 kB
dist\static\js\lib-react.2bce8fdf.js   189.9 kB   60.0 kB

                              Total:   278.3 kB   88.6 kB

Expected behavior

autoCodeSplitting works properly in rsbuild.

Screenshots or Videos

No response

Platform

• Router Version: 1.144.0
• OS: Windows
• Bundler: rsbuild
• Bundler Version: 1.6.15

Additional context

No response