I never noticed this causing any user-visible deadlocks, but I saw
warnings in the Javascript console that the thread pool was getting
exhausted. Increasing it to this number seems to resolve the issue.
Emscripten's stack size was recently decreased to 64 kB from 5 MB,
(https://github.com/emscripten-core/emscripten/pull/18191).
Stack overflow appears to be the cause of frequent crashes of Tracy
in my browser, especially at start-up. This increase is modest, but
seems to be enough to resolve the issue.
