Fix workorder times problems: - sum in workorders list view (displays numeric value rather than mins:secs) - timers sometimes starts at -00:01 - almost all tablet view actions reset the timer (click burger, ...) - clicking pause stops the timer at the next second - seconds are lost in employee timers Task: 2985735 X-original-commit: 7dceef12771890f9fb9fa554e70414c622053ced Part-of: odoo/odoo#106908