Customer name on timesheet line should be inherited from customer set on Project and not Project Contract (funding source).

The customer name on timesheet lines doesn't always related to who we are invoicing, for example if we are working with a partner or a supplier to deliver a service to a customer and using subcontractors, we might not want to disclose this information and showing the funding source to the subcontractor. It would also make it easier for the time reporters to find the correct projects for the customers the have been delivering the services to.