Avoid monkey patching which causes weird reloading error in dev.

plugins/discourse-narrative-bot/plugin.rb

@@ -131,10 +131,7 @@ after_initialize do
     end
   end
 
-  require_dependency "user"
-
-  User.class_eval do
-    def enqueue_narrative_bot_job?
+  self.add_to_class(:user, :enqueue_narrative_bot_job?) do
     SiteSetting.discourse_narrative_bot_enabled &&
       self.id > 0 &&
       !self.anonymous? &&
@@ -142,7 +139,6 @@ after_initialize do
       !self.staged &&
       !SiteSetting.discourse_narrative_bot_ignored_usernames.split('|'.freeze).include?(self.username)
   end
-  end
 
   self.on(:post_created) do |post, options|
     user = post.user