Sweeping !34141 from 21.0 to master. Update ISF_HitAnalysis.cxx: check StatusCode retrieving MuonEntry

Atlas Nightlybuildrequested to merge
cherry-pick-4c6c1b8352-master into master

Update ISF_HitAnalysis.cxx: check StatusCode retrieving MuonEntry

See merge request !34141 (merged)

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