Convert App to TypeScript

(cherry picked from commit d6d90a64a39d3b9d3a95fb6b265517693a70fdd7)

Closes #10233

frontend/src/App/AppUpdatedModal.tsx

@@ -0,0 +1,28 @@
+import React, { useCallback } from 'react';
+import Modal from 'Components/Modal/Modal';
+import AppUpdatedModalContent from './AppUpdatedModalContent';
+
+interface AppUpdatedModalProps {
+  isOpen: boolean;
+  onModalClose: (...args: unknown[]) => unknown;
+}
+
+function AppUpdatedModal(props: AppUpdatedModalProps) {
+  const { isOpen, onModalClose } = props;
+
+  const handleModalClose = useCallback(() => {
+    location.reload();
+  }, []);
+
+  return (
+    <Modal
+      isOpen={isOpen}
+      closeOnBackgroundClick={false}
+      onModalClose={onModalClose}
+    >
+      <AppUpdatedModalContent onModalClose={handleModalClose} />
+    </Modal>
+  );
+}
+
+export default AppUpdatedModal;