Add a back button to Space creation

### Your use case

#### What would you like to do?

Go back during Space creation, in case I made a mistake or want to do more things (e.g. invite more people).

#### Why would you like to do it?

Because I make mistakes, and need more confidence in what I'm doing.

#### How would you like to achieve it?

By clicking a back button which exists.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_