[#141349005] Fix bug: Step numbers do not reset between experiments
[#141349005] Fix bug: Step numbers do not reset between experiments

Moved where samples were capturing the timeFrame and experiment number.
Previously, they were captured at the time of message generation, which could
be deferred. Now they are captured in the CodapConnect.addData call.

concord-consortium/building-models,concord-consortium/building-models,concord-consortium/building-models,concord-consortium/building-models,concord-consortium/building-models