Our HIG explicitly says we can do this for links, and these components
are literally giant links. This might also help differentiate these from
similar looking components like quotes for desktop users.
(cherry picked from commit c3404936fd)
First of all, clicking on them actually works - because we were missing
an import for RoomManager. Secondly, we use a dedicated TapHandler
since onLinkActivated sucks. We want to be able to click anywhere on the
preview to go to the website/room anyway.
