[FIX] account: assertTaxGridAmounts independent from demo data

Part of task 2124952

If another company uses the same tags, they showed up in the assert.

addons/account/tests/test_account_move_reconcile.py

@@ -212,8 +212,11 @@ class TestAccountMoveReconcile(AccountTestInvoicingCommon):
             FROM account_account_tag_account_move_line_rel rel
             JOIN account_move_line line ON line.id = rel.account_move_line_id
             WHERE line.tax_exigible IS TRUE
+              AND line.company_id = ANY(%(company_ids)s)
             GROUP BY rel.account_account_tag_id
-        ''')
+        ''', {
+            'company_ids': self.env.companies.ids,
+        })
 
         for tag_id, total_balance in self.cr.fetchall():
             tag, expected_balance = expected_values[tag_id]