What problem does this address?

Currently if a notification is dismissed the affect is not persisted.

What is your proposed solution?

Request an update to the notification though the REST API and display the resulting dismissal of a notification to the user.

Bonus

• Disable the dismiss button while the request is being processed.
• UI to indicate the dismissal is in progress.
• Animate the dismissal of the notification.

Please confirm that you have searched existing issues in the repo.

Yes