[OU-FIX] commission: Set settlement type to sale_invoice

The default value is 'manual', but all the previous existing
ones are of 'sale_invoice' type, as in 14.0 there was no
other settlement type.

commission/migrations/15.0.2.0.0/post-migration.py

@@ -20,3 +20,11 @@ def migrate(env, version):
             WHERE id = sal_rel.settlement_id
         """,
     )
+    # All the existing settlements are of this type for now
+    openupgrade.logged_query(
+        env.cr,
+        """
+        UPDATE commission_settlement
+        SET settlement_type = 'sale_invoice'
+        """
+    )