make PROXY symbol-property unenumerable

Author: arcticnotes

lib/node/node-wsh.js

@@ -144,7 +144,7 @@ export class WindowsScriptingHost extends EventEmitter {
 
 		const target = handler === this.#objectHandler? new RemoteObject( ref): function() {};
 		const newProxy = new Proxy( target, handler);
-		target[ PROXY] = newProxy;
+		Object.defineProperty( target, PROXY, { enumerable: false, value: newProxy});
 		this.#ref2proxy.set( ref, new WeakRef( newProxy)); // may be overwriting a dead WeakRef
 		this.#proxy2ref.set( newProxy, ref);
 		this.#finalizer.register( newProxy, ref);