Throw an error when accessing the value of symbol property on localStorage object

[ah-yu]

Code snippet:

Object.getOwnPropertyDescriptor(localStorage,Symbol("foo"));

chrome returns undefined but deno throws an error.

error: Uncaught TypeError: Failed to execute 'getItem' on 'Storage': Argument 1 is a symbol, which cannot be converted to a string
console.log(Object.getOwnPropertyDescriptor(localStorage,Symbol("foo")));
                   ^
    at makeException (deno:ext/webidl/00_webidl.js:79:12)
    at Array.converters.DOMString (deno:ext/webidl/00_webidl.js:370:13)
    at Storage.getItem (deno:ext/webstorage/01_webstorage.js:67:31)
    at Object.getOwnPropertyDescriptor (deno:ext/webstorage/01_webstorage.js:147:30)
    at Function.getOwnPropertyDescriptor (<anonymous>)