The filter for `kill` should exclude common pipe redirection patterns that are used by LLMS

[neerajsi-msft]

Describe the bug

✗ Check if dpcsh still alive (shell)
  │ kill -0 83681 2>/dev/null && echo "still running" || echo "gone"
  └ Command not executed. Cannot kill PID 2 - this is an ancestor process of your own runtime.

The above output happens because the kill filter is interpreting the stderr redirection as a pid.

Affected version

No response

Steps to reproduce the behavior

No response

Expected behavior

No response

Additional context

No response