Merge pull request #1060 from aksio-insurtech/fix/restapi_bugfix

Make eventTypes optional, as it should be.

Source/Kernel/Read/EventSequences/EventSequence.cs

@@ -173,7 +173,7 @@ public class EventSequence : ControllerBase
         [FromQuery(Name = "eventTypes[]")] IEnumerable<string> eventTypes = null!)
     {
         var result = new List<AppendedEventWithJsonAsContent>();
-        var parsedEventTypes = eventTypes.Select(EventType.Parse).ToArray();
+        var parsedEventTypes = eventTypes?.Select(EventType.Parse).ToArray();
 
         var correlationId = _executionContextManager.Current.CorrelationId;
         _executionContextManager.Establish(tenantId, correlationId, microserviceId);