Investigate NODE-4450 - Better typings for updating / querying nested objects

NODE-4450 Description

What problem are you facing?

Currently, querying / updating deeply nested fields works perfectly, as long as those fields aren't objects themselves.

When they are objects:

• Querying ignores type validation
• Updating errors

What driver and relevant dependency versions are you using?

4.8.0

Steps to reproduce?

Create a type:

type User = {

  pet: {

    name: {

      first: string;

      last: string;

    }

  }

}

// This works when it shouldn't

const query: mongodb.Filter<User> = { "pet.name": { first: 1 } };

// This doesn't work when it should

const update: mongodb.UpdateFilter<User> = { "pet.name": { first: "a", last: "b" } }