onVisibilityChange() as on/off in regards to (at least) sound/audio

If a developer is on the look out of making a music/audio player, the:

onVisibilityChange() {
    if (this.isHidden()) {
        this._soundManager.suspend();
    } else {
        this._soundManager.resume();
    }
}

• function within the engine seems rigid. The user should be able to listen to the music, regardless of tab-focus or other focus-limiters. YouTube and other players can run in 'background'. The feature request consists of a change that lets developer decide, if the onVisibilityChange() should be/become active after export ... the feature can/should be at editor-level.

Cf https://forum.playcanvas.com/t/solved-audio-mutes-when-out-of-tab-focus-different-with-youtube/19346/2 as well.

//br and hope you will consider for next repo - thanks, from Thomas

Locate the engine's onVisibilityChange() handler and its _soundManager suspend/resume calls, then trace how editor-level settings are passed through export. Define the setting that lets developers choose whether visibility changes affect audio, and verify both configured behaviors with the engine's existing audio or visibility tests, if available.