This update simplifies the process for generating payslips within payruns, addressing outdated and complex code. The changes enhance efficiency and maintainability, ensuring accurate and reliable payslip generation across various Odoo modules. This refactoring improves the underlying system without impacting user experience.

generate_payslips in payruns is old and not pretty:
- args are only used in tests
- logic in it can be simplified

task-6023878