Expose tracked change and comment author email in Word JavaScript API

The Word JavaScript API currently only exposes the author’s display name for tracked changes and comments, not their unique email address or user ID. This makes it impossible to reliably determine if a change or comment is from an internal user or an external counterparty—critical context for document review.

Please add support for retrieving the author’s email (or unique tenant/user ID) for tracked changes and comments in the API. This will allow apps to accurately identify comment authors, enforce org-level permissions, and improve document security for enterprise scenarios.