Don't work with react-native 0.64.2

Hi, I updated my app to react-native 0.64.2 from 0.63.x and your package don't work on ios release mode.

I have this error in xcode logs :

```
[javascript] TypeError: undefined is not an object (evaluating ‘f.tag’)
This error is located at:
in l
in Connect(l)
in f
in Unknown
```

After some investigations, I use redux-i18n that is using react-deep-force-update

The problem is in :
```
var root = instance._reactInternalFiber || instance._reactInternalInstance;
if (typeof root.tag !== 'number') {
// Traverse stack-based React tree.
return deepForceUpdateStack(instance, shouldUpdate, onUpdate);
}
```

root is undefined and can't find tag property.

thx
Jeremie.

Start with the react-deep-force-update code containing the _reactInternalFiber and _reactInternalInstance lookup, then reproduce the failure in an iOS release build using React Native 0.64.2. Trace why root is undefined and verify that the package no longer throws the reported f.tag error while remaining compatible with the referenced React versions.

Written by the indexing model from the issue text.