[DD4hep][Performance] Use DDFilteredView::level instead of copyNos().size()

[ianna]

The following code uses DDFiltereView::copyNos().size() where a DDFiltereView::level() is sufficient:

Geometry/VeryForwardGeometryBuilder/src/DetGeomDesc.cc
Geometry/GEMGeometryBuilder/src/ME0GeometryBuilder.cc
Geometry/GEMGeometryBuilder/src/GEMGeometryBuilder.cc
Geometry/CaloEventSetup/interface/CaloGeometryLoader.icc
Geometry/HGCalCommonData/src/HGCalGeomParameters.cc

@bsunanda - could you, please, look into it after the PR #31508 is merged? Thanks

[cmsbuild]

A new Issue was created by @ianna Ianna Osborne.

@Dr15Jones, @dpiparo, @silviodonato, @smuzaffar, @makortel, @qliphy can you please review it and eventually sign/assign? Thanks.

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[makortel]

assign geometry

[cmsbuild]

New categories assigned: geometry

@Dr15Jones,@cvuosalo,@mdhildreth,@makortel,@ianna,@civanch you have been requested to review this Pull request/Issue and eventually sign? Thanks

[ianna]

HGcal, Calo, GEM, ME0 addressed via #31525

[ianna]

+1

[cmsbuild]

This issue is fully signed and ready to be closed.