fix(i): Remove default collection fields from gql view types

[AndrewSisley]

Relevant issue(s)

Resolves #2199

Description

Removes default collection fields from gql view types.

Views should not automatically have these fields. It will also be impossible to guarantee that they exist once we allow Views to have Lens transforms.

[nasdf]

What happens if the user explicitly includes the _docID in the view query?

testUtils.CreateView{
  Query: `
	  Book {
                  _docID
		  name
	  }
  `,
  SDL: `
	  type BookView {
                   _docID: ID
		  name: String
	  }
  `,
}

[AndrewSisley]

What happens if the user explicitly includes the _docID in the view query?

At the moment it will reject it (error on view creation), as _docID is a reserved field name. Users can work around that by aliasing - later we can perhaps allow them to declare it.