Retrieve shared hits info from TrackParticle in InDetDetailedTrackSelector

In the context of ATLASRECTS-2807, the computation of the shared hit information is going to be moved from the Trk::TrackSummary into the xAOD::TrackParticle creation. This MR anticipates this change by retrieving the corresponding information from the xAOD::TrackParticle in the InDetDetailedTrackSelector tool.

Outputs are checked to be unchanged for q445 test.

FYI @goetz @sroe

added InnerDetector Tracking labels

This merge request affects 1 package:

• InnerDetector/InDetRecTools/InDetTrackSelectorTool

This merge request affects 2 files:

• InnerDetector/InDetRecTools/InDetTrackSelectorTool/InDetTrackSelectorTool/InDetDetailedTrackSelectorTool.h
• InnerDetector/InDetRecTools/InDetTrackSelectorTool/src/InDetDetailedTrackSelectorTool.cxx

Adding @goetz ,@amorley ,@sroe as watchers

added master review-pending-level-1 labels

CI Result SUCCESS (hash 227792b4)

	Athena
externals
cmake
make
tests

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For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 61831]

Approved
Albert (L1)

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

mentioned in commit 4a829e59

merged

added sweep:ignore label