Baml Playground seemingly has tests continuously running when actually completed

[etbyrd]

Chatted with Sam about this in person, but when I run a test in the playground it looks like it keeps running but it actually completed.

The work around that shows the correct output is to just select anything in the UI that will refresh it like "All Test" or "Test Results".

Console log:

[sxlijin]

It's possible that #732 fixes this, but unclear - hard to tell what the root cause here is, unfortunately. Spent a few hours digging into this on Friday and attempting to repro this, but every error I manually injected manifested differently. Will dig into this if it recurs.