…ern pypdf backend

`export_article_to_pdf` calls `writer.setPageMode("/UseOutlines")` on the `PdfFileWriter` instance to make the outline/bookmarks panel visible by default when the generated PDF is opened. the old PyPDF2

`odoo.tools.pdf` picks its backend dynamically it first tries to import PyPDF2==2.12.1  and only falls back to the modern `pypdf` library if PyPDF2 is not importable, which is the case on Python 3.13 per requirements.txt, or on any worker where PyPDF2 failed to install.

The PyPDF2-based writer still exposes `setPageMode`, so the bug was never seen on backends using it. The modern pypdf-based writer replaced that method with a `page_mode` property (getter/setter) and never kept a camelCase alias for it

As a result, any request hitting this code got a beautiful HTTP 500
    `AttributeError: 'BrandedFileWriter' object has no attribute 'setPageMode'`

`setPageMode` is not called anywhere else so
this fixes the call site directly instead of adding a new alias to the shared _pypdf.py

opw-6382905

Forward-Port-Of: odoo/enterprise#124480

Steps to reproduce:
-------------------------------------------------
1. Install the `sale_project` module
2. Create a test user with Project User rights
3. Create a Project Role with the Created User as a Team Member
4. Create a Template Project as follows:
    * Add one task to the template project
    * Add the created Project role to the Task
5. Create a Service Type Product with:
    * Create on order: Project
    * Project Template: Created Template
6. Archive the Created User
7. Create and Confirm the Sale Order with the Created Product

Observation:
-------------------------------------------------
The generated task is assigned to the archived user, although the archived user is no longer part of the Project Role.

Issue:
-------------------------------------------------
While creating Project and Tasks from template, the context disable active record filtering (e.g., `active_test=False`), causing the assignment logic to fetch both active and inactive/archived users linked to the role. https://github.com/odoo/odoo/blob/8ec646e51497b38d34ea59296e0fc8644a50ee3a/odoo/orm/models.py#L4868

After that, during the `copy_data` method, It takes all the users from the roles without checking weather user is active or not
https://github.com/odoo/odoo/blob/8ec646e51497b38d34ea59296e0fc8644a50ee3a/addons/project/models/project_task.py#L890-L904

And even if we pass only Active users from this method, on moving further, it reassigns the users from roles without checking the Active field of the user

https://github.com/odoo/enterprise/blob/5abb147f9bf725daafc202d8259a5bb8a9b78d94/project_enterprise/models/project_task.py#L501-L503

https://github.com/odoo/enterprise/blob/5abb147f9bf725daafc202d8259a5bb8a9b78d94/project_enterprise/models/project_task.py#L544-L553

Due to this, the Archived User is also assigned to the tasks from the project roles

Solution:
-------------------------------------------------
Apply a `filtered('active')` check directly on the project role's users `(role.user_ids)` within the core task-copying logic in both `project` and `project_enterprise` modules. This ensures archived users are universally excluded from task assignments during template copying, regardless of what triggers the template instantiation.

Related Community PR: https://github.com/odoo/odoo/pull/274426

opw-6350841

Forward-Port-Of: odoo/enterprise#127529
Forward-Port-Of: odoo/enterprise#125637