fix: resolve typescript and build errors across admin and guest apps

resources/js/guest/components/__tests__/HeaderNotificationToggle.test.tsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import { describe, expect, it, vi } from 'vitest';
 import { fireEvent, render, screen } from '@testing-library/react';
+import { MemoryRouter } from 'react-router-dom';
 import Header from '../Header';
 
 vi.mock('../settings-sheet', () => ({
@@ -87,7 +88,11 @@ vi.mock('../../i18n/useTranslation', () => ({
 
 describe('Header notifications toggle', () => {
   it('closes the panel when clicking the bell again', () => {
-    render(<Header eventToken="demo" title="Demo" />);
+    render(
+      <MemoryRouter>
+        <Header eventToken="demo" title="Demo" />
+      </MemoryRouter>,
+    );
 
     const bellButton = screen.getByLabelText('Benachrichtigungen anzeigen');
     fireEvent.click(bellButton);