Out of stack space in IE11 when trying to add sympol-keyed property to XHR instance

[betalb]

Out of stack space in IE11 when trying to add sympol-keyed property to XHR instance

When trying to set some property on XMLHttpRequest instance with Symbol as property key, IE11 throws Out of stack space exception.

Here is simple reproducible test case

<script type="text/javascript" src="https://raw.githack.com/zloirock/core-js/v2.5.1/client/shim.min.js"></script>
<script type="text/javascript">
    var ctxSymbol = Symbol('smbl');

    var xhrInstanceUnderTest = new XMLHttpRequest();
    xhrInstanceUnderTest[ctxSymbol] = 'hello';
</script>

Error occurs in core-js/modules/es6.symbol.js $set (inside of if (!USE_NATIVE)) goes into infinite recursion

[zloirock]

Looks like a duplicate of #163

[zloirock]

You can see a note about possible problems with environment exotic objects in the caveats section of README. If you have some ideas how to fix it - feel free to add a PR.