Sparse fields stops working when DefaultEntityRepository.Get() overriden

[milosloub]

Description

Steps to reproduce:

1. I have model like this (reduced for simplicity)

public class Client: Identifiable
{
      [Attr]
      public string FirstName { get; set; }

      [HasOne]
      public Advisor Advisor { get; set; }
      public int AdvisorId { get; set; }
}

2. I have registered custom repository with Get() override:

        public override IQueryable<Client> Get()
            => base.Get()
                .Where(e => e.AdvisorId == 1);

3. I made request: GET /api/clients?fields[clients]=firstName
4. Empty array is returned and console shows:

warn: Microsoft.EntityFrameworkCore.Query[20500]
The LINQ expression 'where (new Client() {Id = [x].Id, FirstName = [x].FirstName}.AdvisorId == 1)' could not be translated and will be evaluated locally.

I can see, that there is strange translation with Where condition (There is statament that belongs to Select query)
I think, that using this line cause the problem

JsonApiDotNetCore/src/JsonApiDotNetCore/Extensions/IQueryableExtensions.cs

Line 401 in b25ea1b

return source.Provider.CreateQuery<TSource>(Expression.Call(

Do you have any idea how to fix this? I can make PR, but I have no idea how to combine those
Provider.CreateQuery, standard LINQ query builder, selects and where queries...

Environment

• JsonApiDotNetCore Version: 3.1.0