Description of problem: Port the WeightedUpdateStatus method to InfraConversionJob. The goal of the method is to update the ServiceTemplateTransformationPlanTask at each transition, so that the UI can display the information.
https://github.com/ManageIQ/manageiq/pull/19154
https://github.com/ManageIQ/manageiq/pull/19164 https://github.com/ManageIQ/manageiq-content/pull/562