add stable_id and stream

app/tasks/maintenance/fill_champs_stable_id_task.rb

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module Maintenance
+  class FillChampsStableIdTask < MaintenanceTasks::Task
+    def collection
+      Champ.includes(:type_de_champ)
+    end
+
+    def process(champ)
+      champ.update_columns(stable_id: champ.stable_id, stream: 'main')
+    end
+  end
+end