Inviting a user to a space they're already in shows "is already in the room"

### Steps to reproduce

Invite a user in a space they're already in

https://user-images.githubusercontent.com/20701752/174246092-b76b8d22-7780-4fa8-aa39-03d0c3d01f36.mp4

### Outcome

#### What did you expect?

Dialog says "[user] is already in the space"

#### What happened instead?

It says "[user] is already in the room"

### Your phone model

Pixel 6 Pro

### Operating system version

Android 12

### Application version and app store

1.4.24-dev

### Homeserver

matrix.org

### Will you send logs?

No

### Are you willing to provide a PR?

Yes