Apply Layout/LineLength rubocop rule

Note we're excluding a few files:

* Configuration files that weren't generated by us
* Migration files that weren't generated by us
* The Gemfile, since it includes an important comment that must be on
  the same line as the gem declaration
* The Budget::Stats class, since the heading statistics are a mess and
  having shorter lines would require a lot of refactoring

app/models/debate.rb

@@ -160,7 +160,11 @@ class Debate < ApplicationRecord
 
   def self.debates_orders(user)
     orders = %w[hot_score confidence_score created_at relevance]
-    orders << "recommendations" if Setting["feature.user.recommendations_on_debates"] && user&.recommended_debates
+
+    if Setting["feature.user.recommendations_on_debates"] && user&.recommended_debates
+      orders << "recommendations"
+    end
+
     orders
   end