I can remove the space name and then it is displayed as "Empty room"

### Steps to reproduce

1. Create a space. The form enforce the name to be not empty
2. Go to the space setting, and edit the name: empty the field and click "Save"

### Outcome

#### What did you expect?

The space setting screen should not allow to set an empty name, as the space creation screen.

If empty, the name fallback should be "Space without name" or something similar

#### What happened instead?

- The space is renamed with an empty name
- The space now appears with the name "Empty room" in the drawer, see below:

### Your phone model

any

### Operating system version

any

### Application version and app store

1.4.16 but this is not a new issue

### Homeserver

any

### Will you send logs?

No