src: update outdated references to spec sections
The exact section has changed in recent versions of ECMA-262, so fix the section number and explicitly mark the edition of the standard to avoid having to update it in the future.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
The exact section has changed in recent versions of ECMA-262, so fix the section number and explicitly mark the edition of the standard to avoid having to update it in the future.