Use tracked changes and comments from the snapshot (#26267)

GitOrigin-RevId: c2bf0c9c9a5ab4f8837b8712ca549119a31cf067

libraries/overleaf-editor-core/lib/file_data/tracked_change_list.js

@@ -21,6 +21,13 @@ class TrackedChangeList {
     this._trackedChanges = trackedChanges
   }
 
+  /**
+   * @returns {IterableIterator<TrackedChange>}
+   */
+  [Symbol.iterator]() {
+    return this._trackedChanges.values()
+  }
+
   /**
    *
    * @param {TrackedChangeRawData[]} raw