SSH monitor: improve process discovery and sleep/wake recovery

[EhabY]

On Linux systems without netstat, find-process could not resolve the SSH PID for a port. This meant the extension could not find the proxy log file (breaking View Logs) or read network info (breaking the network status bar).

Additionally, after laptop sleep/wake, VS Code may reconnect SSH on a new port. The extension did not detect this, so WebSockets were left in a TCP half-open state and the label formatter was not re-registered.

Changes

• Bump find-process to 2.1.1: uses ss -> netstat -> lsof on Linux, netstat -> lsof on macOS.
• Detect SSH port changes in the Remote SSH log to reset discovery backoff.
• Reconnect WebSockets and re-register the label formatter on SSH PID change.