Update InDetGlobalTrackMonTool to use TrackParticle + general cleaning

With !54223 (merged) the computation of the expectInnermostPixelLayerHit and expectNextToInnermostPixelLayerHit Trk::TrackSummary variables will be moved into the xAOD::TrackParticle creation and won't be available in the original TrackSummary any more. This MR updates the InDetGlobalTrackMonTool to use the xAOD::TrackParticle as base class to retrieve the summary fields, instead of the Trk::Track. Subsequent MRs for the other monitoring tools will follow.

For master alone to avoid disturbance in data-taking monitoring.

FYI @perjohan