Fix non-virtual-dtor warnings from G4VFastSimSensitiveDetector

Example: https://lhcb-nightlies.web.cern.ch/nightly/lhcb-gaussino-fastsim/594/Gaussino/x86_64_v2-centos7-gcc11-opt/build

3	../Sim/GiGaMTExamples/G4Par04/src/CaloSensitiveDetector.cpp:29:10: warning: base class 'class G4VFastSimSensitiveDetector' has accessible non-virtual destructor [-Wnon-virtual-dtor]
4	  29 |   struct CaloSensDet final : public G4VSensitiveDetector,
5	     |          ^~~~~~~~~~~

requested review from @dpopov and @gcorti

assigned to @clemenci

deleted the update-to-g4-10.7.3 branch. This merge request now targets the master branch

@mimazure do we still need this patch for 10.7.3? It is not picked up by lhcb-sim11-fastsim and yet the warning does not seem to be present in the build log.

changed milestone to %Geant4 v10r7p3t0

added lhcb-sim11-dev label

added lhcb-sim11-fastsim label

• [2023-11-04 00:22] Validation started with lhcb-sim11-dev#1695
• [2023-11-04 00:26] Validation started with lhcb-sim11-fastsim#9
• [2023-11-05 00:04] Validation started with lhcb-sim11-dev#1696
• [2023-11-06 00:03] Validation started with lhcb-sim11-dev#1697
• [2023-11-07 00:06] Validation started with lhcb-sim11-dev#1698
• [2023-11-08 00:23] Validation started with lhcb-sim11-dev#1699
• [2023-11-08 00:24] Validation started with lhcb-sim11-fastsim#10

merged

mentioned in commit 3d7540f8

resolved all threads