Add a notifier when setting `scene.cursor.matrix`. This was already in place for `cursor.location` and `cursor.rotation`, but was still missing for `cursor.matrix`, which caused the cursor to remain displayed in its old transform.
Add a notifier when setting `scene.cursor.matrix`. This was already in place for `cursor.location` and `cursor.rotation`, but was still missing for `cursor.matrix`, which caused the cursor to remain displayed in its old transform.