Add trending statuses (#17431)

* Add trending statuses

* Fix dangling items with stale scores in localized sets

* Various fixes and improvements

- Change approve_all/reject_all to approve_accounts/reject_accounts
- Change Trends::Query methods to not mutate the original query
- Change Trends::Query#skip to offset
- Change follow recommendations to be refreshed in a transaction

* Add tests for trending statuses filtering behaviour

* Fix not applying filtering scope in controller

app/views/admin_mailer/new_trends.text.erb

@@ -0,0 +1,13 @@
+<%= raw t('application_mailer.salutation', name: display_name(@me)) %>
+
+<%= raw t('admin_mailer.new_trends.body') %>
+
+<% unless @links.empty? %>
+<%= render 'new_trending_links' %>
+<% end %>
+<% unless @tags.empty? %>
+<%= render 'new_trending_tags' unless @tags.empty? %>
+<% end %>
+<% unless @statuses.empty? %>
+<%= render 'new_trending_statuses' unless @statuses.empty? %>
+<% end %>