[BUG] Removed `Demo12` item from `itemsapi_assess` demo page:
[BUG] Removed `Demo12` item from `itemsapi_assess` demo page:

- Some broken content were causing issues on `vg` environment.

Learnosity/learnosity-demos,Learnosity/learnosity-demos,Learnosity/learnosity-demos,Learnosity/learnosity-demos