refactor: fix n+1

app/models/dossier.rb

@@ -896,7 +896,7 @@ class Dossier < ApplicationRecord
   end
 
   def previously_termine?
-    traitements.termine.exists?
+    traitements.any?(&:termine?)
   end
 
   def remove_titres_identite!

app/models/traitement.rb

@@ -26,4 +26,6 @@ class Traitement < ApplicationRecord
       self.browser_supported = BrowserSupport.supported?(browser)
     end
   end
+
+  def termine? = state.in?(Dossier::TERMINE)
 end

app/services/dossier_projection_service.rb

@@ -30,7 +30,7 @@ class DossierProjectionService
   # - the order of the intermediary query results are unknown
   # - some values can be missing (if a revision added or removed them)
   def self.project(dossiers_ids, columns)
-    dossiers = Dossier.includes(:corrections, :pending_corrections).find(dossiers_ids)
+    dossiers = Dossier.includes(:corrections, :pending_corrections, :traitements).find(dossiers_ids)
 
     fields = columns.map do |c|
       if c.is_a?(Columns::ChampColumn)