Safari on iOS puts a scrubber on its lock screen for simple HTMLAudioElements. For example:
const a = new Audio();
a.src = \'https://example.com/audio.m4a\'
I did a search, in search of a way to help you, but I did not find an effective way to disable the commands, however, I found a way to customize them, it may help you, follow the apple tutorial link
I think what's left to do now is wait, see if ios 13 will bring some option that will do what you want.