[ResponseOps][Alerts] Add missing featureIds to AlertsClient find (el…

…astic#190486)

## Summary

Forwards `featureIds` from `AlertsClient.find()` to
`AlertsClient.searchAlerts()`

### References

Fixes elastic#190424

### Checklist

Delete any items that are not applicable to this PR.

- [x] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios

x-pack/plugins/rule_registry/server/alert_data_client/alerts_client.ts

@@ -1017,6 +1017,7 @@ export class AlertsClient {
       }
 
       const alertsSearchResponse = await this.searchAlerts<TAggregations>({
+        featureIds,
         query,
         aggs,
         _source,

x-pack/plugins/rule_registry/server/alert_data_client/tests/find_alerts.test.ts

@@ -74,6 +74,8 @@ beforeEach(() => {
 describe('find()', () => {
   test('calls ES client with given params', async () => {
     const alertsClient = new AlertsClient(alertsClientParams);
+    const searchAlertsSpy = jest.spyOn(alertsClient as any, 'searchAlerts');
+    alertsClient.getAuthorizedAlertsIndices = jest.fn().mockResolvedValue([]);
     esClientMock.search.mockResponseOnce({
       took: 5,
       timed_out: false,
@@ -107,10 +109,21 @@ describe('find()', () => {
         ],
       },
     });
+    const query = { match: { [ALERT_WORKFLOW_STATUS]: 'open' } };
+    const index = '.alerts-observability.apm.alerts';
+    const featureIds = ['siem'];
     const result = await alertsClient.find({
-      query: { match: { [ALERT_WORKFLOW_STATUS]: 'open' } },
-      index: '.alerts-observability.apm.alerts',
+      query,
+      index,
+      featureIds,
     });
+    expect(searchAlertsSpy).toHaveBeenCalledWith(
+      expect.objectContaining({
+        query,
+        index,
+        featureIds,
+      })
+    );
     expect(result).toMatchInlineSnapshot(`
       Object {
         "_shards": Object {