MicrosoftDocs-Samples: Limit number of events stored in TestEventListener (#22263)
* Limit number of events stored in TestEventListener * Throw exception when events are dropped Increase default max event count to 1000. * Dispose the event listener in AzureIdentityEventSourceTests * Add comments on TestEventListener ctor * Dispose TestEventListener in a timely manner * Use method local TestEventListener in Search