Check whether the changes made by the keyboard are taken into account in datetimepicker

- User can change minute directly with keyboard, and without closing the datetimepicker, the modification should be catch and then a label "You have unsaved changes" with the "Save changes" button should appear

spec/features/admin/order_cycles/simple_spec.rb

@@ -604,6 +604,16 @@ feature '
     end
   end
 
+  scenario "modify the minute of a order cycle with the keyboard, check that the modifications are taken into account" do
+    order_cycle = create(:simple_order_cycle, name: "Translusent Berries")
+    login_as_admin_and_visit admin_order_cycles_path
+    find("#oc#{order_cycle.id}_orders_close_at").click
+    datetime = Time.at(Time.zone.local(2040, 10, 17, 0o6, 0o0, 0o0))
+    input = find(".flatpickr-calendar.open .flatpickr-minute")
+    input.send_keys datetime.strftime("%M").to_s.strip
+    expect(page).to have_content "You have unsaved changes"
+  end
+
   scenario "deleting an order cycle" do
     order_cycle = create(:simple_order_cycle, name: "Translusent Berries")
     login_as_admin_and_visit admin_order_cycles_path