When programatically calling `.click()` on an element, the dispatched click event is `composed: false` when it should be true (https://github.com/w3c/webcomponents/issues/513).
We don't compose an event dispatched by click() ever. We should fix that.
*** Bug 176327 has been marked as a duplicate of this bug. ***
Created attachment 348049 [details]
Fixes the bug
Committed r235337: <https://trac.webkit.org/changeset/235337>
Mass move bugs into the DOM component.