Add support for readonly projectable properties for EF core query

Product

Hot Chocolate

Is your feature request related to a problem?

HotChoclate is not fetching the readonly child collections as navigation property. ex:

public class List
    {
        private readonly List<ListLocation> _locations;
        public IReadOnlyCollection<ListLocation> Locations => _locations;
    }

While generating the SQL query, it is only fetching the parent class properties.

The solution you'd like

While HotChoclate generates the GraphQL schema correctly for these properties, I am expecting it to also query the readonly projectable properties as well (generate SQL).

The issue provides no file or test names. Start by tracing Hot Chocolate's EF Core query projection entry point and how readonly child collections are handled; compare the generated SQL for the shown IReadOnlyCollection navigation property. Done means readonly projectable properties are included in the generated query while the GraphQL schema remains correct.