FR: Please help add an option to enable / disable auto notifications on Firebase Messaging.

### Operating System

MacOS 14.6.1

### Environment (if applicable)

Chrome 133.0.6943.142

### Firebase SDK Version

^11.3.1

### Firebase SDK Product(s)

Messaging

### Project Tooling

I built a Google Extension with Firebase Messaging

### Detailed Problem Description

I am facing an issue with duplicate notifications between my custom notification and Firebase auto-notification. I am using a single Firebase project for both Android and the Extension, causing duplication.

### Steps and code to reproduce issue

Init Firebase Messaging and add more
```
self.registration.showNotification('This is title', {
title: '',
body: 'This is body',
icon: 'images/logo.png',
data: {
...
},
})
```

No repository file, test, or entry point is named. Start by reviewing Firebase Messaging web behavior around automatic notifications and the service-worker showNotification call; clarify whether the option applies to Chrome Extensions, Android, or both, and define the expected behavior when it is disabled.

Written by the indexing model from the issue text.