chore: Minor Housekeeping tasks (#3169)

- Limit Rack attack to production environments
- Make the long-running data migration optional

config/initializers/rack_attack.rb

@@ -85,4 +85,4 @@ ActiveSupport::Notifications.subscribe('throttle.rack_attack') do |_name, _start
   Rails.logger.info "[Rack::Attack][Blocked] remote_ip: \"#{payload[:request].remote_ip}\", path: \"#{payload[:request].path}\""
 end
 
-Rack::Attack.enabled = ActiveModel::Type::Boolean.new.cast(ENV.fetch('ENABLE_RACK_ATTACK', true))
+Rack::Attack.enabled = Rails.env.production? ? ActiveModel::Type::Boolean.new.cast(ENV.fetch('ENABLE_RACK_ATTACK', true)) : false