Support for react-native 0.84 (#583)

[AZ604]

Add fallback to use new arch, whenever Fabric renderer is available. Otherwise, use legacy arch UI elements

[AZ604]

this should also support the latest react-native 0.84

[AZ604]

@gre maybe we can merge this, while your work is coming along?

[gre]

Thanks for this PR ! 🙏
i've also generated a PR to update all libs and it managed to do similar fix, but a bit different, let's try to compare our solution to study this. could you rebase this PR so it triggers on CI too? thanks

[gre]

in #587 , I think i've managed to get it work, there were some code change in scrollview related work on iOS which is why i updated the example to have a scrollview test. i'll merge that other PR first and we'll need to see if there is any remaining work to do to get it work with React Native 0.84

[AZ604]

this was mostly written to make this lib work with both RCT_REMOVE_LEGACY_ARCH=0 and 1

I think your PR works similarly