bpo-45212: Add a comment for time.sleep() in tests (GH-28414)

Co-authored-by: Victor Stinner <[email protected]>

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)
+        # bpo-45212: the wait here needs to be longer than the client-side timeout (0.01s)
         time.sleep(1)
 
     # errors