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/mailers/admin_mailer.rb

@@ -35,25 +35,18 @@ class AdminMailer < ApplicationMailer
     end
   end
 
-  def new_trending_tags(recipient, tags)
-    @tags                = tags
-    @me                  = recipient
-    @instance            = Rails.configuration.x.local_domain
-    @lowest_trending_tag = Trends.tags.get(true, Trends.tags.options[:review_threshold]).last
+  def new_trends(recipient, links, tags, statuses)
+    @links                  = links
+    @lowest_trending_link   = Trends.links.query.allowed.limit(Trends.links.options[:review_threshold]).last
+    @tags                   = tags
+    @lowest_trending_tag    = Trends.tags.query.allowed.limit(Trends.tags.options[:review_threshold]).last
+    @statuses               = statuses
+    @lowest_trending_status = Trends.statuses.query.allowed.limit(Trends.statuses.options[:review_threshold]).last
+    @me                     = recipient
+    @instance               = Rails.configuration.x.local_domain
 
     locale_for_account(@me) do
-      mail to: @me.user_email, subject: I18n.t('admin_mailer.new_trending_tags.subject', instance: @instance)
-    end
-  end
-
-  def new_trending_links(recipient, links)
-    @links                = links
-    @me                   = recipient
-    @instance             = Rails.configuration.x.local_domain
-    @lowest_trending_link = Trends.links.get(true, Trends.links.options[:review_threshold]).last
-
-    locale_for_account(@me) do
-      mail to: @me.user_email, subject: I18n.t('admin_mailer.new_trending_links.subject', instance: @instance)
+      mail to: @me.user_email, subject: I18n.t('admin_mailer.new_trends.subject', instance: @instance)
     end
   end
 end