chore(deps): bump prosemirror-changeset from 2.3.1 to 2.4.1 (#12261)

* chore(deps): bump prosemirror-changeset from 2.3.1 to 2.4.1

Bumps [prosemirror-changeset](https://github.com/prosemirror/prosemirror-changeset) from 2.3.1 to 2.4.1.
- [Changelog](https://github.com/ProseMirror/prosemirror-changeset/blob/master/CHANGELOG.md)
- [Commits](https://github.com/prosemirror/prosemirror-changeset/commits)

---
updated-dependencies:
- dependency-name: prosemirror-changeset
  dependency-version: 2.4.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

* fix: ExtendedChange type for prosemirror-changeset 2.4.1

The new Change class adds a toJSON() method, which broke `extends Change`
since ExtendedChange values are built via object spread and have no
prototype methods. Pick only the data properties instead.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tom Moor <tom@getoutline.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

package.json

@@ -191,7 +191,7 @@
     "pluralize": "^8.0.0",
     "png-chunks-extract": "^1.0.0",
     "polished": "^4.3.1",
-    "prosemirror-changeset": "2.3.1",
+    "prosemirror-changeset": "2.4.1",
     "prosemirror-codemark": "^0.4.2",
     "prosemirror-commands": "^1.7.1",
     "prosemirror-dropcursor": "^1.8.2",