Put redirect to duplicate logs path behind a feature flag

app/controllers/form_controller.rb

@@ -155,6 +155,7 @@ private
   end
 
   def successful_redirect_path
+    if FeatureToggle.deduplication_flow_enabled?
       if @log.lettings?
         if current_user.lettings_logs.duplicate_logs(@log).count.positive?
           return send("lettings_log_duplicate_logs_path", @log)
@@ -162,6 +163,7 @@ private
       elsif current_user.sales_logs.duplicate_logs(@log).count.positive?
         return send("sales_log_duplicate_logs_path", @log)
       end
+    end
 
     if is_referrer_type?("check_answers")
       next_page_id = form.next_page_id(@page, @log, current_user)

app/services/feature_toggle.rb

@@ -33,4 +33,8 @@ class FeatureToggle
   def self.new_data_protection_confirmation?
     true
   end
+
+  def self.deduplication_flow_enabled?
+    !Rails.env.production?
+  end
 end