Fix GraphQL userNotesCount when not logged in

What does this MR do and why?

Fix GraphQL userNotesCount when not logged in

Changelog: fixed

Screenshots or screen recordings

Before:

After:

How to set up and validate locally

1. Find a group with some issues
2. While still logged in, run a GraphQL query to ensure data is coming back http://gdk.test:3000/-/graphql-explorer:

    query {
      group(fullPath: "flightjs") {
        issues(first: 5) {
          nodes {
            id
            iid
            webUrl
            userNotesCount
          }
        }
      }
    }

3. Now logout and run the same query 🤞

MR acceptance checklist

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• I have evaluated the MR acceptance checklist for this MR.

Related to #426016