RN 0.56 breaking changes

[Takeno]

From 0.56 patch notes:

Restrict WebView to only http(s) URLs: (634e7e1, 23f8f7a)

Now for local file you need to pass originWhitelist={["file://"]} props to your WebView

[toby1991]

works like a charm! @Takeno thks a lot!