fix comment

backend/agent/servers/mcp_server_code_execution.py

@@ -1,5 +1,7 @@
 import ast
 import subprocess
+import sys
+
 import io
 from pyflakes.api import check          # For linting Code
 from pyflakes.reporter import Reporter  # For linting Code
@@ -233,7 +235,8 @@ def run_python_sandboxed(code: str) -> str:
     
     try:
         result = subprocess.run(
-            ["python", "-c", code],
+            [sys.executable, "-c", code],
+            stdin=subprocess.DEVNULL,
             capture_output=True,
             text=True,
             timeout=EXEC_TIMEOUT)