The planning time-off module's automated tests were moved to a newer testing framework. This helps keep future maintenance more reliable without changing day-to-day user behavior.

Purpose of this PR:

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

Part of task: 3818666

The accounting reports tests now set the country before applying country-based availability rules. This keeps the test process aligned with the latest validation requirements and helps prevent avoidable failures during development.

In the community PR, a constraint on the availability_condition was added, where if availability_condition is set to country, the country_id should be set.

Therefore, in tests where the availability condition is set to country, the country should be set before.

task-4160643

This update aligns internal Python class names with their corresponding Odoo model names across accounting-related modules. It improves code consistency and maintainability without changing day-to-day business workflows.

see: https://github.com/odoo/odoo/pull/178200