wait for Item to be in the document

SAS/TMSS/frontend/tmss_webapp/src/utils/test.helper.js

 import {act} from "react-dom/test-utils";
-import {fireEvent, render, screen} from "@testing-library/react";
+import {fireEvent, render, screen,waitFor} from "@testing-library/react";
 import {BrowserRouter as Router} from "react-router-dom";
 
 const TIMEOUT = 300
@@ -12,6 +12,7 @@ export async function clickItem(item, timeout = TIMEOUT) {
 }
 
 export async function setMultiSelectValue(pageContent, multiSelectTestId, multiSelectValue, timeout = TIMEOUT) {
+    await waitFor(() => expect(pageContent.queryByTestId(multiSelectTestId)).toBeInTheDocument()); // give rendering the time to have it.
     await clickItem(pageContent.queryByTestId(multiSelectTestId));
 
     let items = []