(cherry picked from commit 8d593bcfeb96a3058abeec7bb772579e0c33fcb2)
The only IDL interface without a spec link is Internals
NewAKString is effectively the default for any new IDL interface, so let's mark this as the default behavior. It also makes it much easier to figure out whatever interfaces are still left to port over to new AK String.
The main missing feature here is form associated custom elements.
