This update makes key parts of the stock delivery slip report easier to identify and customize. Businesses and implementation partners can adapt delivery documents more reliably without changing the report from scratch.

Description of the issue/feature this PR addresses:
Poor extensibility of delivery slip report
supersedes https://github.com/odoo/odoo/pull/28333

Current behavior before PR:
The most important nodes of report doesn't have names

Desired behavior after PR is merged:
they have names and can be xpathed noramlly

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Customer rating labels were adjusted so the choices feel more balanced from dissatisfied to satisfied. This makes feedback requests in Helpdesk and Subscriptions clearer and less negatively biased, helping businesses collect more accurate satisfaction signals.

Rating texts had a negative skewness.

TaskID: 2439720

This update removes unnecessary payroll rules related to double holiday calculations for Belgian employees. It simplifies payroll configuration and reduces the chance of confusion without changing core payroll functionality.

TaskID: 2496599

The marketing automation mailing settings now use consistent wording for reply handling options. This reduces confusion for users and aligns the terminology with related email gateway behavior.

Spreadsheet pivot-related menu options have been moved from the general Insert section to the dedicated Pivots section. This makes the options easier to find and keeps related spreadsheet actions grouped together for users.

Menu items "re-Insert Pivot" and "Insert pivot cell" are currently
in the "Insert" section. This commit moves them in the "Pivots" section

Task 2339867