Wrap db:setup with Chewy.strategy(:mastodon) (#24302)

db/seeds.rb

@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
-Dir[Rails.root.join('db', 'seeds', '*.rb')].sort.each do |seed|
+Chewy.strategy(:mastodon) do
-  load seed
+  Dir[Rails.root.join('db', 'seeds', '*.rb')].sort.each do |seed|
+    load seed
+  end
 end