[OU-FIX] account_payment_partner: Pre-create payment_mode_id

So the compute method is not triggered (it will be filled later by
post-migration script).

account_payment_partner/migrations/13.0.1.0.0/pre-migration.py

@@ -0,0 +1,12 @@
+# Copyright 2021 Tecnativa - Pedro M. Baeza
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openupgradelib import openupgrade  # pylint: disable=W7936
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    # Pre-create column for avoiding to trigger the compute
+    openupgrade.logged_query(
+        env.cr, "ALTER TABLE account_move ADD payment_mode_id int4"
+    )