Move renderHeaderActions back into mount useEffect + update tests (#80861) (#80886)

Author: Constance

x-pack/plugins/enterprise_search/public/applications/workplace_search/index.test.tsx

@@ -76,6 +76,7 @@ describe('WorkplaceSearchConfigured', () => {
     shallow(<WorkplaceSearchConfigured />);
 
     expect(initializeAppData).not.toHaveBeenCalled();
+    expect(mockKibanaValues.renderHeaderActions).not.toHaveBeenCalled();
   });
 
   it('renders ErrorState', () => {

x-pack/plugins/enterprise_search/public/applications/workplace_search/index.tsx

@@ -38,11 +38,10 @@ export const WorkplaceSearchConfigured: React.FC<IInitialAppData> = (props) => {
   useEffect(() => {
     if (!hasInitialized) {
       initializeAppData(props);
+      renderHeaderActions(WorkplaceSearchHeaderActions);
     }
   }, [hasInitialized]);
 
-  renderHeaderActions(WorkplaceSearchHeaderActions);
-
   return (
     <Switch>
       <Route path={SETUP_GUIDE_PATH}>