Spreadsheet pivot table values are no longer unnecessarily converted to text before processing. This improves data handling consistency and keeps autofill behavior working correctly with the newer value normalization system.

The values of the pivot table were always stringified with `toString()`. This is not necessary anymore, now that we have registries to normalize/sstringify the values.

The autofill expected the values to be stringified, so we need to adapt it to the new behavior.

Task: [4266072](https://www.odoo.com/odoo/2328/tasks/4266072)

Spreadsheet pivot table autofill has been adjusted to work with recent spreadsheet data handling updates. This keeps autofill behavior reliable when users work with pivot tables, especially with grouped values.

See https://github.com/odoo/odoo/pull/221845

The update refines the visual style of notification items in Discuss to make them clearer and easier to scan. This improves the day-to-day messaging experience with a small user-facing polish change.

The scale certification status now displays the Point of Sale version instead of the IoT device version. This helps users and support teams see the correct software version when checking certification details.

We need to display the PoS Version, not the IoT version.