Fix use conpty setting

src/typings/node-pty.d.ts

@@ -25,6 +25,11 @@ declare module 'node-pty' {
 	  uid?: number;
 	  gid?: number;
 	  encoding?: string;
+	  /**
+	   * Whether to use the experimental ConPTY system on Windows. This setting will be ignored on
+	   * non-Windows.
+	   */
+	  experimentalUseConpty?: boolean;
 	}
 
 	/**

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

@@ -52,7 +52,8 @@ export class TerminalProcess implements ITerminalChildProcess, IDisposable {
 			cwd,
 			env,
 			cols,
-			rows
+			rows,
+			experimentalUseConpty: useConpty
 		};
 
 		try {