[chore] avoid negative waitGroup in test (#8783)

When sending a retry, make sure to do so inside the run function of the
observability sender. Otherwise, tests may produce a negative wait group
error when we start to enforce shutdown of the queues.

exporter/exporterhelper/queue_sender_test.go

@@ -271,7 +271,10 @@ func TestQueuedRetry_RequeuingEnabledQueueFull(t *testing.T) {
  traceErr := consumererror.NewTraces(errors.New("some error"), testdata.GenerateTraces(1))
  mockR := newMockRequest(context.Background(), 1, traceErr)
 
- require.Error(t, be.retrySender.send(mockR), "sending_queue is full")
+ ocs := be.obsrepSender.(*observabilityConsumerSender)
+ ocs.run(func() {
+ require.Error(t, be.retrySender.send(mockR), "sending_queue is full")
+ })
  mockR.checkNumRequests(t, 1)
 }