Fix SCT MSOS decoration in TrackStateOnSurfaceDecorator

Thomas Streblerrequested to merge
tstreble/athena:ATLIDTRKCP-701-2 into 24.0

Follow up to !76943 (merged), potentially needed to get the CI passing in !79332 (merged) FYI @dakiyama

Another instance of improper usage of DecorHandle, since they are directly decorated in the producers FYI @christos @ssnyder

Needed for ATLIDTRKCP-701

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