Pinned messages button should appear in room info panel

[robintown]

Steps to reproduce

1. Enable pinned messages in labs
2. Open the room info panel

Outcome

What did you expect?

Per the designs, there should be a button to view pinned messages in the room info panel.

What happened instead?

It's not there.

Operating system

NixOS unstable

Browser information

Firefox 97.0.1

URL for webapp

develop.element.io

Application version

Element version: 95de708-react-76ca0362e15d-js-58756a1973f2 Olm version: 3.2.8

Homeserver

Synapse 1.52.0

Will you send logs?

No