Display unread count when Room notifications are muted

### Your use case

#### What would you like to do?

When notifications are set to "All Messages" for a room, an unread message count displays next to the room name.

If notifications are set to "None" or "Mentions and Keywords Only", it stops showing the unread messages count icon.

I would propose that the number of unread messages is displayed for each room regardless of its notification settings.

#### Why would you like to do it?

I don't like getting system notifications for chat group messages, and would prefer to catch up on messages at my leisure when I choose to open the app.

#### How would you like to achieve it?

By opening the app and seeing the number of unread messages next to each room I'm in.

### Have you considered any alternatives?

I tried disabling notifications for the entire app, amd setting each individual Room to "All Messages".

This gives the desired behavior, but I lose the ability to selectively enable system notifications for individual chat rooms.

### Additional context

I'm on graphene os if it's relevant.

### Are you willing to provide a PR?

No