Use revision instead of groupe instructeur as dossier procedure link

app/models/avis.rb

@@ -22,6 +22,7 @@ class Avis < ApplicationRecord
   belongs_to :instructeur, optional: true
   belongs_to :experts_procedure, optional: true
   belongs_to :claimant, class_name: 'Instructeur', optional: false
+  has_one :procedure, through: :dossier
 
   has_one_attached :piece_justificative_file
   has_one_attached :introduction_file
@@ -79,10 +80,6 @@ class Avis < ApplicationRecord
     ]
   end
 
-  def procedure
-    dossier.procedure
-  end
-
   def revoked?
     revoked_at.present?
   end