Audio not working with BabylonJS Demo on iOS devices

[GeneUNCG]

With the latest version of this repository, text-to-speech audio does not work on iOS devices. A mute button appears at the top left, and even when clicked on, the audio still does not play. This issue started happening in the recent months. Just a theory, but perhaps the issue is related to version 4 of BabylonJS, and it was fixed in more recent updates (e.g. version 5 or 6). Please see the screenshot attached.

[trusktr]

On iOS, the click event has to happen before any Web Audio is played. If this does not happen, Babylon audio is permanently broken the rest of the session until a user restarts the tab (ouch!).

https://forum.babylonjs.com/t/remove-unmute-button/27577