Like migrate the use of EventTargetInterface enum to EventTargetInterfaceType enum class.
Pull request: https://github.com/WebKit/WebKit/pull/24989
Committed 275233@main (ffdb8dd1da92): <https://commits.webkit.org/275233@main> Reviewed commits have been landed. Closing PR #24989 and removing active labels.
<rdar://problem/123500834>