Consider using Pernosco javascript extension

[mozfreddyb]

With pernosco newest feature (currently in beta testing) to also support jumping from native C++ into JS code and back, it might make sense to enable that for bugmon-created pernosco traces.
More info in https://docs.google.com/document/d/1jWq62Q1bZzeTEJmLHixngBoPfKrOtPSfVFSgsulKY1s/edit?tab=t.0