Join room without closing the explore modal

[dannycolin]

Is your suggestion related to a problem? Please describe.
When I click on the join button in the Explore Room modal, the modal close to give the focus to the room I wanted to join. This can be irritating if I'm exploring the list of room because when I reopen the Explore modal it doesn't remember where I was in the list

Describe the solution you'd like
The ability to join a room in the background without automatically closing the Explore modal

Describe alternatives you've considered
I haven't found any viable alternative

Additional context
Add any other context or screenshots about the feature request here.