[Bug] Support interrupting resume of a pause (?)

[slurmulon]

If you pause an interval and then resume it, that resumption (setTimeout) could take a decent amount of time to complete. If the interval was say 5 seconds, and you paused halfway through, you have 2.5 seconds until the next step runs (i.e. resumes)

The problem here is that somebody might pause again WHILE you're already resuming from another pause, and the setTimeout currently being used right now cannot be interrupted.

resume essentially puts the user into a temporary limbo state where the interval can't be paused.

This could easily get pretty messy and add a bit more complexity, so this requires more thought.