Fix possible crash in winpty

Fixes #74181

src/vs/workbench/contrib/terminal/node/terminalProcess.ts

@@ -200,6 +200,9 @@ export class TerminalProcess implements ITerminalChildProcess, IDisposable {
 		if (this._isDisposed) {
 			return;
 		}
+		if (typeof cols !== 'number' || typeof rows !== 'number') {
+			return;
+		}
 		// Ensure that cols and rows are always >= 1, this prevents a native
 		// exception in winpty.
 		if (this._ptyProcess) {