Implement Data/MapData.clone and use it in Experiment.clone_with #2703
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Summary:
Prior to this change, the data attached to the cloned experiment would retain the
_db_idof the original. When the clone experiment is saved, this would lead to overwriting the DB entry to point to the clone experiment, effectively deleting the data attached to the original experiment.This diff implements
clonemethods forDataandMapData, and uses it inExperiment.clone_withto avoid this issue.Differential Revision: D61715842