close AF-2711
#### PR Dependency Tree
* **PR #13033** 👈
This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)
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## Summary by CodeRabbit
* **Tests**
* Added an end-to-end test to verify that mention notifications are
correctly sent when replying to a comment authored by the document
owner.
* **Refactor**
* Improved the notification logic to streamline how mention and owner
notifications are sent, reducing redundancy and ensuring correct
recipients.
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