javascript: Enable 'Temporary:DriverMaxConnectionPoolSize'

The `test_should_enforce_pool_size_per_cluster_member` should try to consume the result for getting the error since
javascript driver postpone the error raise.

Author: bigmontz

tests/stub/routing/test_routing_v4x4.py

@@ -2813,7 +2813,8 @@ def test_should_enforce_pool_size_per_cluster_member(self):
         session2 = driver.session("w", database=self.adb)
 
         with self.assertRaises(types.DriverError) as exc:
-            session2.begin_transaction()
+            tx = session2.begin_transaction()
+            list(tx.run("RETURN 1 as n"))
 
         if get_driver_name() in ["java"]:
             self.assertEqual(