NGAlert: Fix flaky test (#33415)
NGAlert: Fix flaky test (#33415)

Signed-off-by: Ganesh Vernekar <101acfd19ae0f3f87f861c64d0a8873056704c2b@gmail.com>
grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana,grafana/grafana