The manufacturing app's automated checks were moved to a newer testing approach. This is an internal maintenance change that helps keep future manufacturing updates reliable without changing day-to-day user workflows.

part of task-3818666

The Helpdesk and Website Helpdesk Live Chat test suites were updated to use Odoo's newer testing framework. This is an internal maintenance change that helps keep quality checks reliable without changing customer-facing behavior.

This commit aims to convert QUnit tests which rely on `mail/test_utils` to hoot.

Part of task-3818666

The Approvals app test suite was moved to a newer testing framework. This helps keep internal quality checks current and easier to maintain, with no expected change for end users.

part of task-3818666