Virtualize the steps panel (study browser) #984
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Does this PR close any open issues?
Closes #778
Give a longer description of what this PR addresses and why it's needed
This PR virtualizes the steps panel. The first commit modifies the steps panel to render iteratively and the second adds in virtualization using @tanstack/virtual. Since things are handled iteratively, it makes it pretty easy to virtualize, since we know how long the list is and how large each element is.
Provide pictures/videos of the behavior before and after these changes (optional)
TODO
Are there any additional TODOs before this PR is ready to go?
TODOs: