Cannot change locale in monaco-typescript

monaco-editor version: 0.23.0
Browser: Microsoft Edge 89.0.774.45
OS: Windows 10 (20H2)
Playground code that reproduces the issue:

I want to set the locale of monaco typescript to zh-cn.
However, using the code as follow, I can only see the editor showing in Chinese. The diagnostic messages of typescript are still English.

require.config({
  'vs/nls': {
    availableLanguages: {
      '*': 'zh-cn'
    }
  }
});

The value of 'monaco.languages.typescript.compileroptions.locale' in Console is 'zh-cn'.
I tried to put the folder zh-cn with the file diagnositcMessages.generated.json under the path 'vs/language/typescript', but it doesn't work as well.
Does it mean I did the wrong steps or this function is not available for monaco editor now.

Thanks a lot for developing this project!

Start with the require.config localization settings and monaco.languages.typescript.compilerOptions.locale described in the report, then inspect the referenced vs/language/typescript/diagnosticMessages.generated.json path. Reproduce the issue in the Monaco Editor playground or a self-contained page and verify whether TypeScript diagnostic messages appear in zh-cn.