Add Entreprise raison sociale to dossier export

fix #4422

app/models/dossier.rb

@@ -475,11 +475,21 @@ class Dossier < ApplicationRecord
   def spreadsheet_columns
     columns = [
       ['ID', id.to_s],
-      ['Email', user.email],
-      ['Civilité', individual&.gender],
-      ['Nom', individual&.nom],
-      ['Prénom', individual&.prenom],
-      ['Date de naissance', individual&.birthdate],
+      ['Email', user.email]
+    ]
+
+    if procedure.for_individual?
+      columns += [
+        ['Civilité', individual&.gender],
+        ['Nom', individual&.nom],
+        ['Prénom', individual&.prenom],
+        ['Date de naissance', individual&.birthdate]
+      ]
+    else
+      columns << ['Entreprise raison sociale', etablissement&.entreprise_raison_sociale]
+    end
+
+    columns += [
       ['Archivé', :archived],
       ['État du dossier', I18n.t(state, scope: [:activerecord, :attributes, :dossier, :state])],
       ['Dernière mise à jour le', :updated_at],

spec/services/procedure_export_v2_service_spec.rb

@@ -2,7 +2,7 @@ require 'spec_helper'
 
 describe ProcedureExportV2Service do
   describe 'to_data' do
-    let(:procedure) { create(:procedure, :published, :with_all_champs) }
+    let(:procedure) { create(:procedure, :published, :for_individual, :with_all_champs) }
     subject do
       Tempfile.create do |f|
         f << ProcedureExportV2Service.new(procedure, procedure.dossiers).to_xlsx
@@ -104,12 +104,55 @@ describe ProcedureExportV2Service do
     end
 
     context 'with etablissement' do
+      let(:procedure) { create(:procedure, :published, :with_all_champs) }
       let!(:dossier) { create(:dossier, :en_instruction, :with_all_champs, :with_entreprise, procedure: procedure) }
 
       let(:dossier_etablissement) { etablissements_sheet.data[1] }
       let(:champ_etablissement) { etablissements_sheet.data[0] }
 
+      let(:nominal_headers) do
+        [
+          "ID",
+          "Email",
+          "Entreprise raison sociale",
+          "Archivé",
+          "État du dossier",
+          "Dernière mise à jour le",
+          "Déposé le",
+          "Passé en instruction le",
+          "Traité le",
+          "Motivation de la décision",
+          "Instructeurs",
+          "textarea",
+          "date",
+          "datetime",
+          "number",
+          "decimal_number",
+          "integer_number",
+          "checkbox",
+          "civilite",
+          "email",
+          "phone",
+          "address",
+          "yes_no",
+          "simple_drop_down_list",
+          "multiple_drop_down_list",
+          "linked_drop_down_list",
+          "pays",
+          "regions",
+          "departements",
+          "engagement",
+          "dossier_link",
+          "piece_justificative",
+          "siret",
+          "carte",
+          "text"
+        ]
+      end
+
       it 'should have headers' do
+        expect(dossiers_sheet.headers).to match(nominal_headers)
+
         expect(etablissements_sheet.headers).to eq([
           "Dossier ID",
           "Champ",