Related spec updates - https://pr-preview.s3.amazonaws.com/lukewarlow/trusted-types/pull/457.html#get-trusted-type-data-for-attribute https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-content-attributes This is a follow-up per recent spec updates for https://github.com/WebKit/WebKit/pull/26519#discussion_r1565692382
<rdar://problem/126863695>
This was addressed as part of the original setAttribute work