fix: rename CaloDetectorEndcap to EcalEndcaps so it can display in G4 geom

Detector/DetCRD/compact/CRD_common_v01/Ecal_Crystal_Endcap_v01_01.xml

@@ -30,7 +30,7 @@
   </regions>
 
   <detectors>
-    <detector id="DetID_ECAL_ENDCAP" name="CaloDetectorEndcap" type="LongCrystalBarEndcapCalorimeter_v01" readout="EcalEndcapsCollection" vis="Invisible" sensitive="true" region="EcalendcapRegion">
+    <detector id="DetID_ECAL_ENDCAP" name="EcalEndcaps" type="LongCrystalBarEndcapCalorimeter_v01" readout="EcalEndcapsCollection" vis="Invisible" sensitive="true" region="EcalendcapRegion">
       <!-- Use cm as unit if you want to use Pandora for reconstruction -->
     </detector>
   </detectors>

Detector/DetCRD/src/Calorimeter/LongCrystalBarEndcapCalorimeter_v01.cpp

@@ -90,7 +90,7 @@ static dd4hep::Ref_t create_detector(dd4hep::Detector& theDetector,
     // dd4hep::Volume envelopeVolZminus("envelopeVolZminus", boolean, vacuum); 
 
     
-    dd4hep::Volume envelopeVol("envelopeVol", unionean, vacuum); 
+    dd4hep::Volume envelopeVol(det_name, unionean, vacuum); 
     dd4hep::Transform3D transform(dd4hep::RotationZ(90*degree), dd4hep::Position(0.0, 0.0, -z_min-z_depth/2)); 
     dd4hep::PlacedVolume envelopePlv = motherVol.placeVolume(envelopeVol, transform);