Chore: Fix Flaky test DashboardDatasourceBehaviour (#105682)

Add spy to prevent flaky test

public/app/features/dashboard-scene/scene/DashboardDatasourceBehaviour.test.tsx

@@ -596,6 +596,10 @@ describe('DashboardDatasourceBehaviour', () => {
   });
 
   it('Should re-run query after transformations reprocess', async () => {
+    // sometimes this tests fails with a console error `AggregateError` with an XMLHttpRequest component
+    // this is not related to the test, but a side effect of the interaction with scenes, mixed ds or even js dom
+    // considering it a flaky test, we are explicitly ignoring it by mocking console.error
+    jest.spyOn(console, 'error').mockImplementation();
     const sourcePanel = new VizPanel({
       title: 'Panel A',
       pluginId: 'table',