Unable to remove dm chat from a private space.

### Steps to reproduce

1. Add a dm chat to a private space
2. It doesn't appear in the "rooms and spaces," so there appears to be no way to remove the room.

### Outcome

#### What did you expect?
The dm to show up in "rooms and spaces" so I could remove it.
#### What happened instead?
The dm was not listed and it appears there's no other way to remove it from the space.

### Operating system

Windows

### Application version

Element version: 1.9.7 Olm version: 3.2.8

### How did you install the app?

https://community.chocolatey.org/packages/element-desktop

### Homeserver

yiff.social

### Will you send logs?

No

No source file or test is named in the issue. Reproduce the steps on Windows by adding a DM chat to a private space, then inspect the Rooms and spaces UI and its removal flow. Done means the DM appears in the list and can be removed from the private space.

Written by the indexing model from the issue text.