Fixing bug when filling efficiency vs actual mu

Self-explanatory. Check differences for more details.

FYI: @tstreble

assigned to @ncalace

Build area was cleaned as per request posted in the DB. The full software build will be performed

This merge request affects 1 package:

• InnerDetector/InDetValidation/InDetPhysValMonitoring

This merge request affects 1 file:

• InnerDetector/InDetValidation/InDetPhysValMonitoring/src/InDetPerfPlot_Efficiency.cxx

Adding @sroe ,@lgagnon ,@goetz ,@bkerridg ,@jburzyns ,@keli as watchers

added InnerDetector main review-pending-level-1 labels

Thanks!

CI Result SUCCESS (hash 80dad821)

	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 9364] (remote access info)

Approved from L1

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

merged

mentioned in commit 8e89f61c