Cosmos: Non-generic Find/FindAsync on DbContext is not translated to ReadItem

[ajcvickers]

Using non-generic Find, such as await context.FindAsync(typeof(Post), 77); is not translated to ReadItem and instead results in a normal query:

SELECT c
FROM root c
WHERE ((c["Discriminator"] = "Post") AND (c["Id"] = @__p_0))
OFFSET 0 LIMIT 1

Repro

using (var context = new AppDbContext())
{
    await context.Database.EnsureDeletedAsync();
    await context.Database.EnsureCreatedAsync();

    context.Add(new Post { Id = 77 } );
    
    await context.SaveChangesAsync();
}

using (var context = new AppDbContext())
{
    var x = await context.FindAsync(typeof(Post), 77);
}

public class AppDbContext : DbContext
{
    public DbSet<Post> Posts => Set<Post>();

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        => optionsBuilder
            .UseCosmos(
                "https://localhost:8081",
                "C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==",
                "EFDatabase")
            .LogTo(Console.WriteLine, LogLevel.Information)
            .EnableSensitiveDataLogging();
}

public class Post
{
    public int Id { get; set; }
    public string? Title { get; set; }
}