Bump react-native to 0.73.1, expo to 50 (#2214)

* Bump to react-native@0.73, bump expo@next

Includes bumps for all expo deps and dev dependencies. Updates
react-native patch and others, and removes the babel-preset-expo patch.

* Remove duplicate Splash ref

* Bump more deps

* Properly install expo-notifications

* Bump webview dep

* Bump packages according to expo fix; remove pager-view patch as it is no longer needed

* Don't access expo-camera from Web

* Fix crypto dep on web

* Fix some type issues

* Build esnext modules to support dynamic imports

---------

Co-authored-by: Paul Frazee <pfrazee@gmail.com>

src/Splash.tsx

@@ -40,8 +40,6 @@ type Props = {
   isReady: boolean
 }
 
-SplashScreen.preventAutoHideAsync().catch(() => {})
-
 const AnimatedLogo = Animated.createAnimatedComponent(Logo)
 
 export function Splash(props: React.PropsWithChildren<Props>) {