Before this commit, when the user is in the project update kanban view and click on Purchase Order row shown in Project Profitability section in the right side panel, the user cannot create or edit a purchase order because the AA on each purchase order line is used to link those purchase orders to the project. This commit adds the project and also `project_update` key in the context to use them keys to set the AA on new Purchase Order Line by default. task-2861207 closes odoo/odoo#95721 Related: odoo/enterprise#29304 Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>