Read receipt info menu disambiguates users in excessively many ways

[robintown]

Steps to reproduce

1. View a room where someone has a similar display name to yours
2. Click on their read receipt
3. Hover over their avatar

Outcome

What did you expect?

To see the user's MXID for disambiguation in at most one or two places

What happened instead?

The user's MXID is displayed in four places within this one menu:

Operating system

NixOS unstable

Browser information

Firefox 99.0

URL for webapp

develop.element.io

Application version

Element version: 691b8d5-react-0c7a4dfcacea-js-1bb82108b742 Olm version: 3.2.8

Homeserver

Synapse 1.57.0

Will you send logs?

No