vm: use missing validator

The `vm` lib module's `isContext()` function should use a validator.

PR-URL: #38935
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Zijian Liu <lxxyxzj@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/vm.js

@@ -206,9 +206,8 @@ function getContextOptions(options) {
 }
 
 function isContext(object) {
-  if (typeof object !== 'object' || object === null) {
-    throw new ERR_INVALID_ARG_TYPE('object', 'Object', object);
-  }
+  validateObject(object, 'object', { allowArray: true });
+
   return _isContext(object);
 }