Internal Odoo links in chatter and Discuss will no longer automatically generate link previews, reducing clutter for users. Administrators can also define links or patterns to ignore, giving businesses more control over which previews appear.

This PR is going to limit the generation of link preview inside the chatter and
discuss for internal link (/web|/odoo) and add and regexp compatible
`ir.config_parameter` called `mail.mail_link_preview_ignore_list` that accepts a
list of links or regexp to be ignored when creating link previews.

task-4102866

This update improves several Point of Sale flows, including localized electronic invoicing behavior for Chile and Ecuador, barcode scanning, and customer due settlement. These changes help stores process sales more smoothly and reduce friction in country-specific compliance and payment workflows.