Updating MM IdHelper and cluster uncertainties

This MR is the manual sweep of MR !31642 (closed)

Updating the MM resolution (keeping loose values for stereo layers) and adding isStereo method to the helper.

MuonSpectrometer/MuonIdHelpers/MuonIdHelpers/MmIdHelper.h

@@ -93,7 +93,8 @@ class MmIdHelper : public MuonIdHelper {
   int gasGap(const Identifier& id) const;
   int multilayer(const Identifier& id) const;
   int channel(const Identifier& id) const;
-  bool measuresPhi(const Identifier& id) const; //Returns true for stereo layers
+  bool isStereo(const Identifier& id) const;
+  bool measuresPhi(const Identifier& id) const; //Returns false
 
   int numberOfMultilayers(const Identifier& id) const;
 
@@ -301,12 +302,16 @@ inline int MmIdHelper::gasGapMin() const {
   return GasGapMin;
 }
 /*******************************************************************************/ 
-inline bool MmIdHelper::measuresPhi(const Identifier& id) const{
-  bool measPhi = false;
+inline bool MmIdHelper::isStereo(const Identifier& id) const{
+  bool isStereo = false;
   int ml = multilayer(id);
   int gg = gasGap(id);
-  if ( (ml==1 && gg>2) || (ml==2 && gg<3) ) measPhi = true;
-  return measPhi;                                                                                               
+  if ( (ml==1 && gg>2) || (ml==2 && gg<3) ) isStereo = true;
+  return isStereo;                                                                                               
+}
+/*******************************************************************************/ 
+inline bool MmIdHelper::measuresPhi(const Identifier& /*id*/) const{
+  return false; 
 }
 /*******************************************************************************/ 
 inline int MmIdHelper::gasGapMax() const {