Draft: backport-fix-for-G4GammaGeneralProcess

This MR allows to use correctly G4GammaGeneralProcess with option2. It is a backport from v11r0 that fixes a bug in setting some em parameters.

source/processes/electromagnetic/utils/src/G4EmParameters.cc

@@ -455,7 +455,8 @@ void G4EmParameters::SetGeneralProcessActive(G4bool val)
   gener = val;
   // if general interaction is enabled then sub-cutoff and 
   // force interaction options should be disabled
-  if(gener) { fBParameters->Initialise(); }
+  // *** Comment the following line to backport a bug fix from G4v11r0 
+  //if(gener) { fBParameters->Initialise(); }
 }
 
 G4bool G4EmParameters::GeneralProcessActive() const