Turn off C# variable discard in EditorConfig

When formatting and auto fixing "linting" errors in C# files in VSCode it seems to discard my unused variables. Basically it puts _ = in front of everything.

It does this because csharp_style_unused_value_assignment_preference = discard_variable is the default. https://docs.microsoft.com/da-dk/dotnet/fundamentals/code-analysis/style-rules/ide0059#csharp_style_unused_value_assignment_preference

// csharp_style_unused_value_assignment_preference = discard_variable
int GetCount(Dictionary<string, int> wordCount, string searchWord)
{
    _ = wordCount.TryGetValue(searchWord, out var count);
    return count;
}

// csharp_style_unused_value_assignment_preference = unused_local_variable
int GetCount(Dictionary<string, int> wordCount, string searchWord)
{
    var unused = wordCount.TryGetValue(searchWord, out var count);
    return count;
}

That's neat. But how do I turn it off? So when I apply formatting to my C# files in VSCode it doesn't add _ =.

My VSCode settings:

{
  "settings": {
    "[csharp]": {
      "editor.defaultFormatter": "csharpier.csharpier-vscode",
      "editor.codeActionsOnSave": {
        "source.fixAll.csharp": true
      }
    },
    "omnisharp.enableEditorConfigSupport": true,
    "omnisharp.enableRoslynAnalyzers": true,
  }
}