MuonGeoModelTestR4: Fix cppcheck warnings.

Use CxxUtils::starts_with.

This merge request affects 1 package:

• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelTestR4

This merge request affects 5 files:

• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelTestR4/CMakeLists.txt
• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelTestR4/util/runMdtGeoComparison.cxx
• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelTestR4/util/runRpcGeoComparison.cxx
• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelTestR4/util/runTgcGeoComparison.cxx
• MuonSpectrometer/MuonPhaseII/MuonDetDescr/MuonGeoModelTestR4/util/runsTgcGeoComparison.cxx

Adding @rosati ,@kluit ,@stavrop ,@jojungge ,@pscholer ,@apsallid as watchers

added MuonSpectrometer main review-pending-level-1 labels

CI Result SUCCESS (hash e769e404)

	Athena
externals
cmake
make
tests

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Athena: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 3762]

Looks good to me. Lucy (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 64ec46f2