Ability to see which rooms you share with another.

### Your use case

#### What would you like to do?
To have better reference on how I meet users from DMs
#### Why would you like to do it?
To remind myself of how I met this person and from where.
#### How would you like to achieve it?
From viewing their profile, could be a dedicated section on "shared rooms"

### Have you considered any alternatives?

_No response_

### Additional context

_No response_