Update UIWebView to WKWebView on ViroReact

[akinncar]

Apple Store is rejecting our app because the library that we are using (Viro React) are using a deprecated API on binaries, so we need to update it:

Apple Message to US

ITMS-90809: Deprecated API Usage - New apps that use UIWebView are no longer accepted. Instead, use WKWebView for improved security and reliability. Learn more (https://developer.apple.com/documentation/uikit/uiwebview).

Viro React Discussion

viromedia/viro#852

Approaches tips

• Use grep -r UIWebView node_modules/* on the therminal to see all UIWebView Usage.
• I recommend forking the repository and manually solving it since most of the existing forks with the solution are deprecated.
• See some related tweets:
  https://twitter.com/akinncar/status/1461138006555955207
  https://twitter.com/akinncar/status/1461491911559155719
  https://twitter.com/akinncar/status/1461517341678837771

[akinncar]

Add new row and set a key and value in your info.plist to use WKWebView instead of UIWebView.
Key: gad_preferred_webview

Value: wkwebview

https://stackoverflow.com/a/62137910/10142204