fix(champs): run mentainance task on all records

app/tasks/maintenance/fill_champs_stable_id_task.rb

@@ -3,12 +3,14 @@
 module Maintenance
   class FillChampsStableIdTask < MaintenanceTasks::Task
     def collection
-      Champ.where(stable_id: nil).includes(:type_de_champ)
+      Champ.all
     end
 
     def process(champ)
+      if !champ.attribute_present?(:stable_id)
         champ.update_columns(stable_id: champ.stable_id, stream: 'main')
       end
+    end
 
     def count
       sql = "SELECT reltuples FROM pg_class WHERE relname = 'champs';"