We were using `autoclose` as the topic status update
when silently closing topics using the bulk
actions (introduced in 0464ddcd9b377d8249d8a3c15cfe91d7a8e97bfc).
However, this resulted in a message like this showing in
the topic as a small moderator post:
> This topic was automatically closed after X days.
This is not accurate, the topic was bulk closed by someone.
Instead, we can use `closed` as the status, and a more accurate
> Closed on DATE
message is used. `TopicStatusUpdater` needed an additional
option to keep the same "fake read" behaviour as autoclose
so we can keep the same functionality for silently closing
topics in bulk actions.