refactor(mailer): set dolist header in DeviseUserMailer

app/mailers/application_mailer.rb

@@ -1,5 +1,5 @@
 class ApplicationMailer < ActionMailer::Base
-  include MailerErrorConcern
+  include MailerMonitoringConcern
 
   helper :application # gives access to all helpers defined within `application_helper`.
   default from: "#{APPLICATION_NAME} <#{CONTACT_EMAIL}>"
@@ -20,12 +20,4 @@ class ApplicationMailer < ActionMailer::Base
     Sentry.capture_exception(e, extra: { procedure_id: procedure.id })
     nil
   end
-
-  # mandatory for dolist
-  # used for tracking in Dolist UI
-  # the delivery_method is yet unknown (:balancer)
-  # so we add the dolist header for everyone
-  def add_dolist_header
-    headers['X-Dolist-Message-Name'] = action_name
-  end
 end

app/mailers/concerns/mailer_monitoring_concern.rb

@@ -1,4 +1,4 @@
-module MailerErrorConcern
+module MailerMonitoringConcern
   extend ActiveSupport::Concern
 
   included do
@@ -17,6 +17,14 @@ module MailerErrorConcern
 
     rescue_from StandardError, with: :log_delivery_error
 
+    # mandatory for dolist
+    # used for tracking in Dolist UI
+    # the delivery_method is yet unknown (:balancer)
+    # so we add the dolist header for everyone
+    def add_dolist_header
+      headers['X-Dolist-Message-Name'] = action_name
+    end
+
     protected
 
     def log_delivery_error(exception)

app/mailers/devise_user_mailer.rb

@@ -3,7 +3,7 @@ class DeviseUserMailer < Devise::Mailer
   helper :application # gives access to all helpers defined within `application_helper`.
   helper MailerHelper
   include Devise::Controllers::UrlHelpers # Optional. eg. `confirmation_url`
-  include MailerErrorConcern
+  include MailerMonitoringConcern
   layout 'mailers/layout'
 
   def template_paths