config: reload compatibility aliases on classes reload

Fixes zeitwerk complaining that the compatibility aliases loaded in an
initializer will never be reloaded.

In our case it doesn't matter that much, but it will reduce the console
spam.

config/initializers/active_job_compatibility.rb

@@ -13,7 +13,8 @@
 
 require 'excon'
 
-module ApiEntreprise
+Rails.application.reloader.to_prepare do
+  module ApiEntreprise
     Job = APIEntreprise::Job
     AssociationJob = APIEntreprise::AssociationJob
     AttestationFiscaleJob = APIEntreprise::AttestationFiscaleJob
@@ -23,8 +24,9 @@ module ApiEntreprise
     EffectifsJob = APIEntreprise::EffectifsJob
     EntrepriseJob = APIEntreprise::EntrepriseJob
     ExercicesJob = APIEntreprise::ExercicesJob
-end
+  end
 
-module Cron
+  module Cron
     FixMissingAntivirusAnalysis = FixMissingAntivirusAnalysisJob
+  end
 end