Remove atomic TrackingVolume pointer by setting it in initialize

Hi,

this MR moves the setting of the MS entrance TrackingVolume pointer to the initialize function of CombinedMuonTrackBuilder. Thus, it avoids a mutable. This MR is the last missing change for ATLASRECTS-5315 to be fixed.

Best, Nico

WARNING: big files (>100K) are found in the changeset

204K in file Reconstruction/MuonIdentification/MuidTrackBuilder/src/CombinedMuonTrackBuilder.cxx

This merge request affects 1 package:

• Reconstruction/MuonIdentification/MuidTrackBuilder

Adding @goetz ,@rosati ,@nkoehler ,@wleight as watchers

added Reconstruction master review-pending-level-1 labels

CI Result SUCCESS (hash e2f2993a)

	Athena	AthSimulation	AnalysisBase	AthGeneration
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 15178]

mentioned in merge request !32381 (closed)

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

merged

mentioned in commit 73b61ad0

added sweep:ignore label