add react-dom/experimental to out types in tsconfig in order to work around the useFormState ts error

dashboard/15-final/app/ui/invoices/create-form.tsx

@@ -11,7 +11,7 @@ import {
 import { Button } from '../button';
 import { createInvoice } from '@/app/lib/actions';
 // @ts-ignore React types do not yet include useFormState
-import { experimental_useFormState as useFormState } from 'react-dom';
+import { useFormState } from 'react-dom';
 
 export default function Form({ customers }: { customers: CustomerField[] }) {
   const initialState = { message: null, errors: [] };

dashboard/15-final/tsconfig.json

@@ -1,5 +1,6 @@
 {
   "compilerOptions": {
+    "types": ["react-dom/experimental"],
     "target": "es5",
     "lib": ["dom", "dom.iterable", "esnext"],
     "allowJs": true,