define m_padSizeX,Y as float

fixed a small bug => needed for the Muon monitoring

requested review from @farchill

assigned to @desimone

/ci-test

added ci-test-triggered label

• [2023-05-06 22:34] Validation started with lhcb-master-mr#7793

approved this merge request

resolved all threads

merged

mentioned in commit a5e4c45e

mentioned in issue Moore#574 (closed)