redux-toolkit -> redux 마이그레이션 및 TAxios 로직 수정

com.twin.app.shoptime/src/index.js

@@ -1,8 +1,10 @@
-import { createRoot } from "react-dom/client";
-import { store } from "./store/store";
+import React from "react";
+import { render } from "react-dom";
+
 import { Provider } from "react-redux";
 
 import App from "./App";
+import { store } from "./store/store";
 
 let appElement = (
   <Provider store={store}>
@@ -10,11 +12,12 @@ let appElement = (
   </Provider>
 );
 
-// In a browser environment, render instead of exporting
 if (typeof window === "object") {
-  createRoot(document.getElementById("root")).render(appElement);
-  appElement = null;
   window.store = store;
+
+  render(appElement, document.getElementById("root"));
+
+  appElement = null;
 }
 
 export default appElement;