We split recent_topics module into recent_topics_(ui + data + util).
This allows us to reduce cyclical dependencies which were
created due to large list of imports in recent topics. Also, this
refactor on its own makes sense.
We also add a check to see if `message_feed_container` is visible,
since it is possible that recent topics could be visible which
was not a possibility when this logic was written.
This data structure has never been one that we actually render into
the DOM; instead, its role is to support clicking into view that
contain muted streams and topics quickly.
This downgrade makes that situation much more explicit, and is also
useful refactoring to help simpify the upcoming changes in #16746.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Steve Howell
Aman Agrawal
Anders Kaseorg