Sec. Index: query with filter on an indexed field of a primary subtype always returns only 1 doc.

[islamaliev]

schema:

type User {
  name: String
  age: Int @index
  devices: [Device]
} 

type Device {
  model: String 
  owner: User
}

Query:

query {
  Device(filter: {
    owner: {age: {_eq: 48}}
  }) {
    model
    owner {
      name
    }
  }
}

Here if a user with age 48 has more than 1 device, all of them should be returned with the same owner. At the moment only 1 device is returned.

Detected during testing of #2365