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

spec/controllers/api/v1/trends/tags_controller_spec.rb

@@ -7,10 +7,9 @@ RSpec.describe Api::V1::Trends::TagsController, type: :controller do
 
   describe 'GET #index' do
     before do
-      trending_tags = double()
-
-      allow(trending_tags).to receive(:get).and_return(Fabricate.times(10, :tag))
-      allow(Trends).to receive(:tags).and_return(trending_tags)
+      Fabricate.times(10, :tag).each do |tag|
+        10.times { |i| Trends.tags.add(tag, i) }
+      end
 
       get :index
     end