Fix testWithTimeoutTriggeredSend.

Author: serhiy-storchaka

Lib/test/test_socket.py

@@ -6207,6 +6207,7 @@ def _testWithTimeoutTriggeredSend(self):
     def testWithTimeoutTriggeredSend(self):
         conn = self.accept_conn()
         conn.recv(88192)
+        time.sleep(1)
 
     # errors