The messaging menu now shows a background color behind the WhatsApp icon. This small visual improvement makes the icon easier to recognize and helps users navigate messaging options more clearly.

The Helpdesk eLearning integration has been adjusted to work with the redesigned course pages after the old all-courses page was merged into the main eLearning home page. This keeps helpdesk-related training content accessible and aligned with the updated website experience.

Following the merge of the page /slides/all with the website_slides home page:
- we adapt the code of website_helpdesk_slides that was using the template of the page /slides/all that we have removed.
- we rename the method slides_channel_all_values as slides_channel_values.

see odoo/odoo#221762

Task-3893028

Generated websites can now use the updated standard footers again. This simplifies website creation and helps ensure new sites include consistent footer layouts without extra selection setup.

With the update to footers, commit 2c5211de10aeb8df313a2ca0c8d07f41db6e44d8, we can reactivate the footers and no longer need to create the footer we-select.

Unused Sign role records were removed after the Sign app UI changes made them unnecessary. Related HR and document-signing tests and demo data were updated so signing templates continue to work with roles created dynamically when needed.

- Since the big UI refactor in the sign app, the sign item roles are not used anymore and rules are added on the template on the run 
- This commit aims to clean up the data file of these roles and update the tests not to use them

task-id: 4646742