Sweeping !46149 from master to 22.0-mc20. MuonMDT_CnvTools: Use central definition of maxNTubesPerLayer

Atlas Nightlybuildrequested to merge
cherry-pick-f5c35117f6b-22.0-mc20 into 22.0-mc20

MuonMDT_CnvTools: Use central definition of maxNTubesPerLayer

See merge request !46149 (merged)

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