Some cases of shadowing are not resolved properly

For example,
```js
function test(JSON) {
JSON.stringify(obj).at(-1);
}
```

Start by reproducing the JavaScript example in issue #259, then locate the shadowing-resolution entry point in the Babel polyfills repository. Trace how the parameter named JSON is handled during analysis; done means this case resolves the local binding correctly and no longer produces the reported behavior.

Written by the indexing model from the issue text.