test(projects): set company on second project to fix CI mandatory error

The second Project in test_sales_order_link_is_not_overwritten_by_second_project
was inserted without a company, which only succeeds when a default company is
configured. On a fresh CI site this raised MandatoryError. Set company from the
sales order explicitly.

erpnext/projects/doctype/project/test_project.py

@@ -185,6 +185,7 @@ class TestProject(ERPNextTestSuite):
 		second_project = frappe.get_doc(
 			doctype="Project",
 			project_name="Second project for same sales order",
+			company=so.company,
 			sales_order=so.name,
 		).insert()
 		self.assertEqual(second_project.sales_order, so.name)