Make category in the API non-mandatory

[microstudi]

🎩 What? Why?

Currently querying the api with something like this:

{
  component(id: 123) {
    { 
       ...on Proposal {
         proposals { 
            edges { 
              node { 
                id, 
                category { id }
             }
          } 
       }
    }
  }
}

Does not return proposals without categories.
As category is not mandatory the api should honor that.

📌 Related Issues

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• Related to #?
• Fixes #?

Testing

Just try to fetch any proposal without category with a query with the category element.

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