feat(dossier): use persisted dossier for preview

app/controllers/administrateurs/procedures_controller.rb

@@ -44,7 +44,7 @@ module Administrateurs
     end
 
     def apercu
-      @dossier = procedure_without_control.draft_revision.new_dossier
+      @dossier = procedure_without_control.draft_revision.dossier_for_preview(current_user)
       @tab = apercu_tab
     end
 

app/models/dossier.rb

@@ -544,7 +544,7 @@ class Dossier < ApplicationRecord
   end
 
   def can_transition_to_en_construction?
-    brouillon? && procedure.dossier_can_transition_to_en_construction?
+    brouillon? && procedure.dossier_can_transition_to_en_construction? && !for_procedure_preview?
   end
 
   def can_repasser_en_instruction?
@@ -1246,7 +1246,7 @@ class Dossier < ApplicationRecord
   end
 
   def send_draft_notification_email
-    if brouillon? && !procedure.declarative?
+    if brouillon? && !procedure.declarative? && !for_procedure_preview?
       DossierMailer.notify_new_draft(self).deliver_later
     end
   end

app/models/procedure_revision.rb

@@ -132,6 +132,19 @@ class ProcedureRevision < ApplicationRecord
     )
   end
 
+  def dossier_for_preview(user)
+    dossier = Dossier
+      .create_with(groupe_instructeur: procedure.defaut_groupe_instructeur_for_new_dossier)
+      .find_or_initialize_by(revision: self, user: user, for_procedure_preview: true, state: Dossier.states.fetch(:brouillon))
+
+    if dossier.new_record?
+      dossier.build_default_individual
+      dossier.save!
+    end
+
+    dossier
+  end
+
   private
 
   def compare_attestation_template(from_at, to_at)

spec/controllers/administrateurs/procedures_controller_spec.rb

@@ -23,7 +23,11 @@ describe Administrateurs::ProceduresController, type: :controller do
       get :apercu, params: { id: procedure.id }
     end
 
-    it { expect(response).to have_http_status(:ok) }
+    it do
+      expect(response).to have_http_status(:ok)
+      expect(procedure.dossiers.visible_by_user).to be_empty
+      expect(procedure.dossiers.for_procedure_preview).not_to be_empty
+    end
   end
 
   let(:procedure_params) {