Visiting the C# Operations example with the default stuff on the website is currently broken with the below error.

### Which packages are impacted by your issue?

@graphql-codegen/c-sharp-operations

### Describe the bug

The website has a broken C# Operations example, and currently I am also unable to use the package in my own repo.

Website error:
```
e.map is not a function. (In 'e.map(e=>this.getFragmentVariableName(e))', 'e.map' is undefined)
```

### Your Example Website or App

https://the-guild.dev/graphql/codegen

### Steps to Reproduce the Bug or Issue

1. Visit https://the-guild.dev/graphql/codegen
2. Select C# Operations
3. Observe the error in the output.

### Expected behavior

It should work on your website.

### Screenshots or Videos

### Platform

- OS: [e.g. macOS, Windows, Linux]
- NodeJS: [e.g. 18.5.0]
- `graphql` version: [e.g. 16.3.0]
- `@graphql-codegen/*` version(s): [e.g. 2.6.2]

### Codegen Config File

_No response_

### Additional context

_No response_