Sales users can now generate project tasks from sales order lines even when the Timesheets app is not installed. This makes task-based service delivery, such as field service work, available without requiring time tracking.

Description of the issue/feature this PR addresses:
Task: https://www.odoo.com/web#id=2123707&action=327&model=project.task&view_type=form&menu_id=4720
Pad: https://pad.odoo.com/p/r.45a3483fb0471d550cf9c212cb74c303


Current behavior before PR:

Desired behavior after PR is merged:




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This update modernizes parts of Odoo's Mail and Discuss experience using a newer interface framework. It improves how messaging areas behave while loading and includes fixes around message composition, attachments, notifications, and internal test support, helping make the mail experience smoother and more reliable.