Favourites metaspace keeps showing unread notification for room that's not a favourite

### Steps to reproduce

1. Unfavourite a room
2. Wait for message to come in

### Outcome

#### What did you expect?
Unread count for favourites metaspace doesn't go up

#### What happened instead?
Unread count in the favourites metaspace in the left panel goes up and stays up until I find the room in the "all rooms" or appropriate space and read it

Triaging as S-Major because the point of the favourites metaspace is to be able to get see messages more easily only from favourite rooms

### Browser information

Chromium 109.0.5414.74 (Official Build) Arch Linux (64-bit)

### URL for webapp

develop.element.io

### Application version

Element version: a26be2665fc1-react-42692820c76b-js-5cf0bb46a4e3
Olm version: 3.2.12

### Homeserver

matrix.org

### Will you send logs?

No