Fix !ENABLE(ACCESSIBILITY) build following 259169@main.
Pull request: https://github.com/WebKit/WebKit/pull/9019
Committed 259268@main (5cf1f09b2ac8): <https://commits.webkit.org/259268@main> Reviewed commits have been landed. Closing PR #9019 and removing active labels.
<rdar://problem/104593160>