libheif catching unrelated exceptions

[mattpodolak]

I'm encountering the issue where libheif.js is catching unrelated exceptions / rejections as related to this issue https://github.com/emscripten-core/emscripten/issues/7855

it makes debugging applications using libheif very difficult. Can a work around to this issue be added similar to: https://github.com/OpenSLX/picotcp.js/commit/a68205e06ec8686102e3e7cf61da3419b972103b