Preload WebView while in background/offscreen

Hello,

first of all thanks for your time maintaining this awesome project.

Is your feature request related to a problem? If so, Please describe.

I am trying to preload a WebView while in background. I use react-navigation with a BottomTabNavigator and its lazy-mode deactivated; this renders all tabbed children at the same time. As the WebView is a direct child of one of the tabs I confirmed it calling the render function of the WebView tab directly at app start while the navigator is loaded. However onLoadStart is only called if I navigate to the WebView tab - effectively becoming onscreen and visible. This is too late in my case.

Describe the solutions you came up with

• I tried a forced reload without success.
• Found various ways to do it in native, which are not applicable for react-native. (i.e. see here)

Additional context

Tried it on iOS only at the moment.