GenType: mutually recursive types inside module fails to reference type by flattened alias

[JonoPrest]

Hi there,

I've found a bug with genType that can be reproduced as follows:

module MyModule = {
  @genType
  type rec a = {fieldB: b}
  @genType and b = {fieldA: a}
}

produces:

// tslint:disable-next-line:interface-over-type-literal
export type MyModule_a = { readonly fieldB: b };

// tslint:disable-next-line:interface-over-type-literal
export type MyModule_b = { readonly fieldA: MyModule_a };

As you can see fieldB references b and not MyModule_b