Describe the bug

When an error occurs at parsing or validation time (which yields a 400 status code response), the operation name is Anonymous even if an operation name have been provided.

query AllSizeGuides {
  cms {
    all_storefront_page(limit: 10) {
      items {
        category_id
      }
    }
  }
}

Will generate this metric:

graphql_yoga_http_duration_count{method="POST",statusCode="200",operationType="query",operationName="AllSizeGuides"} 1

query AllSizeGuides {
  cms {
    all_storefront_page(limit: 10) {
      items {
        category_id__NON_EXISTING
      }
    }
  }
}

Will generate this metric:

graphql_yoga_http_duration_count{method="POST",statusCode="400",operationName="Anonymous"} 1

Your Example Website or App

NA

Steps to Reproduce the Bug or Issue

NA

Expected behavior

The graphql_yoga_http_duration_count should always extract the operation name from the query document if available.

Screenshots or Videos

No response

Platform

NA

Additional context

No response