Alerting: Fix flakey FilterView test (#97882)

* increase timeout

* update assertion

* Add retry as well to prevent flakiness 🤞

---------

Co-authored-by: Tom Ratcliffe <tom.ratcliffe@grafana.com>

public/app/features/alerting/unified/rule-list/FilterView.test.tsx

@@ -34,6 +34,7 @@ beforeEach(() => {
 const io = mockIntersectionObserver();
 
 describe('RuleList - FilterView', () => {
+  jest.retryTimes(2);
   it('should render multiple pages of results', async () => {
     render(<FilterView filterState={getFilter({ dataSourceNames: ['Mimir'] })} />);
 
@@ -53,12 +54,11 @@ describe('RuleList - FilterView', () => {
 
     await loadMoreResults();
 
-    const matchingRule = await screen.findByRole('treeitem', {
-      name: /test-rule-8 test-mimir-namespace test-group-4501/,
-    });
+    const matchingRule = (await screen.findAllByRole('treeitem')).at(0);
     expect(matchingRule).toBeInTheDocument();
 
     expect(matchingRule).toHaveTextContent('test-rule-8');
+    expect(matchingRule).toHaveTextContent('test-mimir-namespace');
     expect(matchingRule).toHaveTextContent('test-group-4501');
     expect(await screen.findByText(/No more results/)).toBeInTheDocument();
   });