Room pills in edit and send message composer use old default avatars

[turt2live]

Steps to reproduce

1. Mention a room without an avatar
2. Observe the composer state
3. Send that message
4. Observe the new avatar style
5. Edit that message
6. Observe the same legacy avatar you saw in Step 2

Outcome

What did you expect?

Consistency with the new avatar style.

What happened instead?

Operating system

Windows 11

Application version

Element Nightly version: 0.0.1-nightly.2023082801 Olm version: 3.2.14

How did you install the app?

The Internet

Homeserver

t2l.io

Will you send logs?

No

[germain-gg]

Fixing this will also fix the issue with the OS notification that @pixlwave just made me aware of