[async_hooks] improve property descriptors in als.bind

The length property should be non enumerable to match behavior of
normal functions.

The asyncResource property is enumerable and therefore it should be
also writable to avoid issues like there:
nodejs#30932 (comment)

Both properties should be configurable.

Refs: nodejs#34574

lib/async_hooks.js

@@ -220,12 +220,16 @@ class AsyncResource {
     const ret = this.runInAsyncScope.bind(this, fn);
     ObjectDefineProperties(ret, {
       'length': {
-        enumerable: true,
+        configurable: true,
+        enumerable: false,
         value: fn.length,
+        writable: false,
       },
       'asyncResource': {
+        configurable: true,
         enumerable: true,
         value: this,
+        writable: true,
       }
     });
     return ret;