This update allows HR users to archive departure reasons that are no longer in use. Previously, HR users could only manage these reasons by naming them, leading to confusion. Now, HR users can actively archive unused reasons, preventing their continued use and simplifying HR processes.

An HR user has currently no way to prevent use of specific /deprecated departure reason other than specifying it in the name.

This commit an active field on `hr.departure.reason` so that an HR user can archive departure reasons that should not be used (as he can't delete them if they are referenced at least once).

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This update corrects the tax names and descriptions used in Odoo for Belgium. These changes ensure accurate reporting and compliance with Belgian tax regulations. The update impacts the accounting and point-of-sale modules within the Odoo system.

### With this commit:-
 - We are updating the current tax name and its description in Belgium.
 - Please visit the task for more reference.

task-5363874

Forward-Port-Of: odoo/odoo#243142
Forward-Port-Of: odoo/odoo#236242

This update simplifies the process for sharing documents with partners who don't have existing user accounts. Now, when a partner accesses a document with a public link, they can create a user directly linked to that partner, streamlining document sharing and improving user experience. This change ensures partners can easily access documents without needing to create a full user profile.

Purpose
=======
We can share a document to a partner without a user, and with `access_via_link == 'none'`. In that situation, the partner is forced to create a user, but if he clicks on signup, then the new user won't be linked to the partner set on the `documents.access` (a new partner will be created).

Now, when inviting a member, if he doesn't have a user, we invite him to create a user. If the partner has a user, then we just redirect him to the login page.

Task-5242208

Forward-Port-Of: odoo/enterprise#104374
Forward-Port-Of: odoo/enterprise#100628

This update enhances the appearance of full-size popups on the website to prevent content from blending with transparent backgrounds. A 10px margin and a default white background have been added to improve visual separation and readability, ensuring a clearer user experience.

The full-size option for popups could be misleading when using
transparent backgrounds, as the dialog content could visually merge
with the page and become hard to read.

This change keeps the same behavior as other popup sizes while adding a
10px margin on both sides of the snippet. It also applies a default white
background in full-size mode, ensuring better visual separation and improved readability.

| Before  | After |
| ------------- | ------------- |
| <img width="1646" height="456" alt="image" src="https://github.com/user-attachments/assets/122b266d-8391-45fe-a6be-08177b97f99c" /> | <img width="1659" height="466" alt="image" src="https://github.com/user-attachments/assets/df4e09de-850e-4735-9169-5115465c1372" /> |
| <img width="1641" height="707" alt="image" src="https://github.com/user-attachments/assets/51d549f8-f7ff-42de-aba1-52ab0b4adaf0" /> | <img width="1655" height="687" alt="image" src="https://github.com/user-attachments/assets/2085b8ec-f318-4f04-a9ed-af8ecb0d6fa8" /> |

task-5435802

This update adds helpful guidance to the Odoo POS pricing tool, specifically for the `pos.pricer` and `pricer.tag` models. This change simplifies the setup process for new users and administrators, making it easier to configure pricing strategies within the system.

Following this commit:
====
- Added help for pos.pricer and pricer.tag models to ease implementation for new user.

task-5462933