G4ProfilingTools: Fix cppcheck 2.14 warnings.

Delete copy/assignment for classes that manage memory. Prefer returning const references to members rather than copies.

Simulation/G4Utilities/G4ProfilingTools/src/TestActionTimer.h

 /*
-  Copyright (C) 2002-2021 CERN for the benefit of the ATLAS collaboration
+  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
 */
 
 //////////////////////////////////////////////////////////////////
@@ -57,6 +57,9 @@ namespace G4UA
     /// constructor
     TestActionTimer();
 
+    TestActionTimer(const TestActionTimer&);
+    TestActionTimer& operator=(const TestActionTimer&);
+
     /// this holds all the data from individual threads that needs to be merged at EoR
     struct Report
     {