@SC_OC
Thank you for posting in Microsoft Q&A forum.
The Computer restart client settings change the user experience for all required deployments that require a restart like this article said.
For wufb, CM do not actually deploy the updates to clients. So you may need a group policy to configure the notification:
Computer Configuration > Administrative Templates > Windows Components > Windows Update > Turn off auto-restart notifications for update installations.
Click Enabled to disable notifications.
Click Not configured or Disabled to enable notifications.
If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.