gh-133089: Make subprocess.run's behavior is same with 'timeout=None' when the timeout is zero

Signed-off-by: Manjusaka <[email protected]>

Author: Zheaoli

Lib/subprocess.py

@@ -1191,6 +1191,8 @@ def communicate(self, input=None, timeout=None):
         universal_newlines.
         """
 
+        timeout = None if timeout == 0 else timeout
+
         if self._communication_started and input:
             raise ValueError("Cannot send input after starting communication")
 
@@ -1268,6 +1270,7 @@ def _check_timeout(self, endtime, orig_timeout, stdout_seq, stderr_seq,
 
 
     def wait(self, timeout=None):
+        timeout = None if timeout == 0 else timeout
         """Wait for child process to terminate; returns self.returncode."""
         if timeout is not None:
             endtime = _time() + timeout