[Bug]: Polyfill:"Usage",but the packaged product es5 syntax has a scope problem, causing my variables to be contaminated.

[PropersonCyber]

Version

System:
    OS: macOS 14.5
    CPU: (8) x64 Apple M1
    Memory: 42.29 MB / 16.00 GB
    Shell: 5.9 - /bin/zsh
  Browsers:
    Chrome: 131.0.6778.87
    Safari: 17.5

Details

I used polyfill:'usage' to configure compatibility with my browser, but the packaged product es5 syntax has a scope problem, causing my variables to be contaminated. In my code, show_type in 3 should be used instead of show_type in 1（figure 1 is the compiled code ）. How do I fix this, Or is this a bug in rsbuild?

Reproduce link

https://codesandbox.io/p/github/rspack-contrib/rsbuild-codesandbox-example/csb-zktgdv/draft/great-flower?file=%2Fsrc%2FApp.jsx%3A11%2C54

Reproduce Steps

npm run build

checkout index.[hash].js , search "show_type" the result will be appear！！

[chenjiahan]

The codesandbox link is invalid, can you have a look at it?

[chenjiahan]

Duplicated: web-infra-dev/rspack#8637