Six months back we reported Chrome and Edge Chromium can cut down the notification request noise by websites if you enable the flag they offer in the Canary version then, the experimental feature has been graduated as a feature and Google has integrated it –“the Quieter permission UI for notifications” — into Chrome browser Settings (disabled by default though), now Microsoft offers an option for Quiet UI in new Edge Settings as well in the version 83.
New Microsoft Edge by default asks the user for permission before sending the notification, turning off the “Ask before sending (recommended)” on edge://settings/content/notifications page will block all the site notifications, Microsoft has added a new option under Ask before sending Setting in Notification Settings.for users to slience the notifications, here is how you can enable it.
Enable Quiet UI for notifications in new Microsoft Edge
Ensure you’re running Edge 83 or higher
1. Launch new Microsoft Edge browser
2. Click on ellipsis icon, select Settings
3. Select Site Permissions
4. Click Notifications and enable “Quiet notification requests”, the option claims it will “prevent notification requests from interrupting you”.

The quiet notification requests option is available in the Edge beta version and soon will be available in Edge stable version also.
Related articles:
Chrome on Android now makes Website Notification Prompts less annoying
Chrome and Chromium Edge can now silence the Website Notification Prompts
Chrome Canary on Android lets you lower Notifications Permission Requests without a flag
Mozilla Firefox to Run Experiments to Curb Notification Spam