Snippet generation does not respect configuration

### 👓 What did you see?

I have a `cucumber.json` file with the `snippetInterface` setting set to `async-await`. When I run cucumber the snippets outputed for undefined steps show the use of async function.

When I generate a step from the feature file via the plugin, the step generated uses a synchronous arrow function.

### ✅ What did you expect to see?

The generated step should use an async function with the `function` keyword, just as cucumber does in its output.

### 📦 Which tool/library version are you using?

cucumber-js v8.10.0

### 🔬 How could we reproduce it?

1. Create a `cucumber.json` file with this content:
```
{
"default": {
"formatOptions": {
"snippetInterface": "async-await"
}
}
}
```
2. Open vscode with the cucumber plugin loaded.
3. Write a feature file with undefined steps.
4. Generate a step from the feature file via the plugin.
5. See the generated step.

### 📚 Any additional context?

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