[FIX] sale_stock: Fix test depending of 'account' running at_install

Since the chart template is loaded post_install, a test depending of the accounting
must always be run post_install.

addons/sale_stock/tests/test_anglo_saxon_valuation.py

@@ -6,6 +6,7 @@ from odoo.tests.common import SavepointCase
 from odoo.exceptions import UserError
 
 
+@tagged('post_install', '-at_install')
 class TestAngloSaxonValuation(SavepointCase):
     @classmethod
     def setUpClass(cls):