"Favourites" section of home space only showing four chats?

### Steps to reproduce

1. Switch to the Home space
2. Review the favourites section and try to find all chats

### Outcome

#### What did you expect?

I expected to be able to see all of my favourited chats in this list. I have more than four favourited.

#### What happened instead?

Some of my chats appear to be missing from the favourites section. It only displays four chats, but I have more than four favourited. There's no way to expand or scroll it to find the extra chats that are missing.

### Operating system

macOS

### Application version

Element version 1.12.24

### How did you install the app?

https://try.element.io/get-started

### Homeserver

Synapse 1.156.0

### Will you send logs?

No

Start by reproducing the issue in the Home space with more than four favourited chats on macOS or the web app. Trace the Home space favourites section from its UI entry point and check how additional chats are handled. Done means every favourited chat can be found, including those beyond the first four, with a usable way to expand or scroll the list.

Written by the indexing model from the issue text.