https://forums.ankiweb.net/t/audio-in-back-template-is-played-on-front-template-on-desktop-2-1-46/12399
Unlike when using <template> element, if a DocumentFragment is created
using Range.createContextualFragment(), <audio>/<video> elements
with `aotoplay` will play immediately even before they are inserted into
the actual document, which will cause audio or video on the answer side
to be played on the question side.
