GPU: print ITS stat summary on EOS (#15686)

* GPU: print ITS stat summary on EOS

Signed-off-by: Felix Schlepper <felix.schlepper@cern.ch>

* Simplify summary printing in endOfStream method

---------

Signed-off-by: Felix Schlepper <felix.schlepper@cern.ch>

Author: f3sch

GPU/Workflow/src/GPUWorkflowSpec.cxx

@@ -371,6 +371,9 @@ void GPURecoWorkflowSpec::stop()
 
 void GPURecoWorkflowSpec::endOfStream(EndOfStreamContext& ec)
 {
+  if (mSpecConfig.runITSTracking && mITSTrackingInterface != nullptr) {
+    mITSTrackingInterface->printSummary();
+  }
   handlePipelineEndOfStream(ec);
 }