Migrate React example app to react-scripts 5

Reviewed By: antonk52

Differential Revision: D35114197

fbshipit-source-id: 88b35b4d927d7eca099a62d9cf4319ffe3ecf423

js/react-flipper-example/src/FlipperTicTacToe.tsx

@@ -92,7 +92,8 @@ const FlipperTicTacToe: FC = () => {
             key={idx}
             disabled={!connection || gameState.turn !== 'X' || state !== ' '}
             onClick={() => connection?.send('XMove', {move: idx})}
-            className="cell">
+            className="cell"
+          >
             {state}
           </button>
         ))}