Spreadsheet users can now apply global filters to Odoo graph charts, keeping charts aligned with the same filtering controls used elsewhere in a spreadsheet. This makes reporting easier and more consistent when teams need to analyze chart data by period, customer, salesperson, or other shared criteria.

Spreadsheet pivot tables now show missing grouping values as "None" instead of "(Undefined)", matching the behavior users see elsewhere in Odoo. This makes pivot reports easier to read and keeps spreadsheet reporting terminology consistent across the product.

Task  2800964

Users can now download the current session's sales report directly from the point-of-sale closing popup using a download icon. This makes a commonly used report easier to access and removes Sweden-specific customization that is now handled more generally.

In this commit we make it possible for a user to
download the Sales Report of the current session
by clicking at the "download" icon at the lower
right corner of the closing pos popup.

This is a commonly used feature. So it will
result at a more pleasant UX if we expose
it from the front-end.

The overriding of the function `_get_report_values`
in this localisation module is no longer needed
since a more general approach is followed at the base
module (point_of_sale). For this reason we delete it.

task-2755384

Subscription permissions now use the standard Sales roles instead of separate subscription-specific groups. This makes user access easier to manage and keeps subscription permissions aligned with the broader sales workflow.

- Replace the use of `group_sale_subscription_manager` by
sale's `group_sale_manager`
- Replace the use of `group_sale_subscription_view` by
sale's `group_sale_salesman`

taskid-2857425

The Documents app has been updated to use a newer internal approach for sharing common behavior across its views. This modernizes the code behind document lists and kanban views, making future maintenance easier without changing day-to-day user workflows.

Prior to this commit mixins in documents where done using the `patch`
function which is a bit archaic.
We now use a more modern approach for this.

TaskId-2930789