MuonTrackingGeometry fix memory bugs

Rework the memory management of the muon tracking geometry and the Geo -> Trk::Volume converter. Cone clean up etc. Few bug fixes.

Validation tests perfromed on simulation Run2 & Run 3

Further 250k data events from DRAW_ZMUMU have been reprocessed

Tagging @todorova, @pscholer, @zyan, @nstyles, @jcatmore, @jchapman, @kluit

Closes ATLASRECTS-7876

The full plot bock is attached to the JIRA ticket because the file size limit there is larger than here