[FIX] saas_portal_sale: Show client contract with contract view instead

of account analytic view

saas_portal_sale/views/saas_portal.xml

@@ -9,7 +9,7 @@
  <field name="arch" type="xml">
  <xpath expr="//group[@name='settings']" position="after">
  <group string="Invoicing" name="invoicing">
- <field name="contract_id"/>
+ <field name="contract_id" context="{'form_view_ref': 'account.invoice_form'}"/>
  </group>
  </xpath>
  </field>