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>

tsconfig.json

@@ -1,14 +1,16 @@
 {
-  "extends": "@tsconfig/react-native/tsconfig.json",
+  "extends": "@react-native/typescript-config/tsconfig.json",
   "compilerOptions": {
     "jsx": "react-jsx",
+    "module": "esnext",
     "types": ["node"],
     "paths": {
       "#/*": ["./src/*"],
       "lib/*": ["./src/lib/*"],
       "platform/*": ["./src/platform/*"],
       "state/*": ["./src/state/*"],
-      "view/*": ["./src/view/*"]
+      "view/*": ["./src/view/*"],
+      "crypto": ["./src/platform/crypto.ts"]
     }
   }
 }