Migrate to React 18

Summary:
Sadly, we have to use the experimental version of React to decapitate React Devtools.
See https://fb.workplace.com/groups/react.devtools/posts/3135684459978453/?comment_id=3135711763309056&reply_comment_id=3135760513304181

On the bright side, Replay.io and Code Sandbox also use experimental React without any problem.

Reviewed By: lblasa

Differential Revision: D34926473

fbshipit-source-id: 5cd63cc065c2535f0583464c7b5e37891dadaf14

desktop/flipper-ui-browser/tsconfig.json

@@ -4,7 +4,7 @@
     "outDir": "lib",
     "rootDir": "src",
     "lib": ["dom", "ES2019"],
-    "types": ["../types/flipperGlobals"]
+    "types": ["../types/flipperGlobals", "react/next", "react-dom/next"]
   },
   "references": [
     {