[worklets] WebAudio API does allow multiple global scopes

[svgeesus]

Just noticed this:

Note: Specifically the [css-paint-api-1] allows for multiple global scopes, while the [webaudio] API does not.
https://drafts.css-houdini.org/worklets/#worklet-section

This is incorrect, audio worklet can also have multiple global scopes.

[domenic]

This can be closed; it was removed and replaced with more generic language in https://html.spec.whatwg.org/multipage/worklets.html