[FIX] sale_timesheet: created task company depends on its project

When confirming a SO creates a task, the task is in a project. The
company from the task should be the one from the project, as we will
(in the next commit) restrict the company of a task: it will only
allow a project to have task in the same company as its.

Task-1999686

addons/sale_timesheet/models/sale_order.py

@@ -270,7 +270,7 @@ class SaleOrderLine(models.Model):
             'description': description,
             'project_id': project.id,
             'sale_line_id': self.id,
-            'company_id': self.company_id.id,
+            'company_id': project.company_id.id,
             'user_id': False,  # force non assigned task, as created as sudo()
         }