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/platform/crypto.ts

@@ -0,0 +1,7 @@
+// HACK
+// expo-modules-core tries to require('crypto') in uuid.web.js
+// and while it tries to detect web crypto before doing so, our
+// build fails when it tries to do this require. We use a babel
+// and tsconfig alias to direct it here
+// -prf
+export default crypto

src/platform/detection.ts

@@ -14,5 +14,7 @@ export const isMobileWeb =
   global.window.matchMedia(isMobileWebMediaQuery)?.matches
 
 export const deviceLocales = dedupArray(
-  getLocales?.().map?.(locale => locale.languageCode),
-)
+  getLocales?.()
+    .map?.(locale => locale.languageCode)
+    .filter(code => typeof code === 'string'),
+) as string[]