fix: use Object.defineProperty for window.location in test

Replace `as Location` cast with Object.defineProperty to match the
existing beforeEach pattern and fix TypeScript strict mode error.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/components/AppBarScoreBadge.test.tsx

@@ -124,7 +124,10 @@ describe('AppBarScoreBadge', () => {
   });
 
   it('navigates to /polaris when no cluster in URL', async () => {
-    window.location = { pathname: '/settings' } as Location;
+    Object.defineProperty(window, 'location', {
+      value: { pathname: '/settings' },
+      writable: true,
+    });
     const user = userEvent.setup();
     const data = makeAuditData([
       makeResult({