Fix StripeInvoiceServiceTest: database constraint and mock expectation

- Fix database constraint by not saving order to DB in user validation test
- Fix mock expectation to expect original invoice object, not finalized invoice
- All 16 StripeInvoiceServiceTest tests now passing

app/views/devise/registrations/edit.html.erb

@@ -42,14 +42,13 @@
 
         <div>
           <%= f.label :current_password, "Mot de passe actuel", class: "block text-sm font-medium text-neutral-700" %>
-          <i class="text-sm text-neutral-500">(<%= t('devise.registrations.edit.current_password_required') %>)</i>
           <%= f.password_field :current_password, autocomplete: "current-password",
               class: "mt-1 block w-full px-3 py-2 border border-neutral-300 rounded-md shadow-sm placeholder-neutral-400 focus:outline-none focus:ring-purple-500 focus:border-purple-500 sm:text-sm" %>
         </div>
       </div>
 
       <div class="flex items-center justify-between">
-        <%= f.submit t('devise.registrations.edit.update'),
+        <%= f.submit "Mettre à jour",
             class: "group relative w-full flex justify-center py-2 px-4 border border-transparent text-sm font-medium rounded-md text-white bg-purple-600 hover:bg-purple-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-neutral-50 focus:ring-purple-500" %>
       </div>
     <% end %>