Events: Upon setting a new active bundle variant add the old active variant to the event payload #839
Description
Story
To be able to easier trace back what a previous bundle was before a recent active bundle change, it'd be nice if the payload of the bundle change event would contain the "oldValue" of that particular bundle variant.
Problems
Easier tracing back to what a previous bundle was at a certain point.
Proposal
Add it to the payload data?
TODO
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