✨ Polishing: Allow users to adjust which channels show up in <Inbox> global preferences

[EdenTurgeman]

📜 Description

disclaimer: this might be a feature request but it seems like a polish of the preferences.channels feature when using inApp() When using the Inbox component, the default global preferences show all channels, it might be better if you can do something like this:

<Inbox globalPreferences={{
channels: ['inApp', 'sms'....] 
}} />

![image](https://github.com/user-attachments/assets/f2af5292-0d2e-4eb0-8d3b-0015da723e4e)


### 👟 Reproduction steps

_No response_

### 👍 Expected behavior

_No response_

### 📃 Provide any additional context for the Bug.

_No response_

### 👀 Have you spent some time to check if this bug has been raised before?

- [X] I checked and didn't find similar issue

### 🏢 Have you read the Contributing Guidelines?

- [X] I have read the [Contributing Guidelines](https://github.com/novuhq/novu/blob/main/CONTRIBUTING.md)