CLDC-3719: Move sale completion date question to start of setup section

app/models/form/sales/subsections/setup.rb

@@ -7,10 +7,10 @@ class Form::Sales::Subsections::Setup < ::Form::Subsection
 
   def pages
     @pages ||= [
+      Form::Sales::Pages::SaleDate.new(nil, nil, self),
       Form::Sales::Pages::OwningOrganisation.new(nil, nil, self),
       Form::Sales::Pages::ManagingOrganisation.new(nil, nil, self),
       Form::Sales::Pages::CreatedBy.new(nil, nil, self),
-      Form::Sales::Pages::SaleDate.new(nil, nil, self),
       Form::Sales::Pages::PurchaserCode.new(nil, nil, self),
       Form::Sales::Pages::OwnershipScheme.new(nil, nil, self),
       Form::Sales::Pages::SharedOwnershipType.new(nil, nil, self),

spec/models/form/sales/subsections/setup_spec.rb

@@ -28,10 +28,10 @@ RSpec.describe Form::Sales::Subsections::Setup, type: :model do
     it "has correct pages" do
       expect(setup.pages.map(&:id)).to eq(
         %w[
+          completion_date
           owning_organisation
           managing_organisation
           assigned_to
-          completion_date
           purchaser_code
           ownership_scheme
           shared_ownership_type
@@ -54,10 +54,10 @@ RSpec.describe Form::Sales::Subsections::Setup, type: :model do
     it "has correct pages" do
       expect(setup.pages.map(&:id)).to eq(
         %w[
+          completion_date
           owning_organisation
           managing_organisation
           assigned_to
-          completion_date
           purchaser_code
           ownership_scheme
           shared_ownership_type