WebCore::WillChangeData::AnimatableFeature constructor does not always initialize m_cssPropertyID. Regressed in: Implement parsing for CSS will-change https://bugs.webkit.org/show_bug.cgi?id=148052 <https://commits.webkit.org/166177@main>
<rdar://problem/129072285>
Pull request: https://github.com/WebKit/WebKit/pull/29384