Delete action must remove references from other types

[mersocarlin]

Assume post and comment entities and their schema definition as:

const commentSchema = new schemas.Entity('comments')
const postSchema = new schemas.Entity('posts', {
  comments: [commentSchema],
}) 

{
  entities: {
    comments: {
      'comment1': { ... }
    },
    posts: {
      'post1': {
        comments: ['comment1'],
        ...
      }
    }
  }
}

Make a DELETE request to /api/comments/comment1.

• Store at comments is empty
• Even though we re-fetch /api/posts, our store at posts['post1'].comments still contains comment1 reference