Copy relating to Private Spaces should be less business focused

### Your use case

#### What would you like to do?
When creating private spaces, the copy assumes that Element is being used for business purposes. Examples:
- "Invite only, best your yourself or teams"
- "Who are you working with?"
- "Me and my teammates"
- "A private space for you and your teammates"
- "What projects are your team working on?"

Related, is the prompt when creating a room
- "Add some details to help people recognize it." this is the same as public spaces and implies the private space is publicly available.



#### Why would you like to do it?
The copy does not make sense when using element in non-work purposes, and feels quite alienating when creating groups for personal/social purposes.

#### How would you like to achieve it?
The copy should be more generic - the list above could be replaced with
- "Invite only, best for groups"
- "Who should have access?"
- "People I choose"
- "A private space for you and others"
- "What rooms would you like to create?"

These suggestions probably be improved upon, but hopefully illustrate the intent of the room can be agnostic of how different people might use element/matrix.

### Have you considered any alternatives?

_No response_

### Additional context

_No response_