Causes crash with simple repro <div id=t style="border-radius: unset"></div> <script> t.style.borderRadius; </script>
Created attachment 444294 [details] Patch for landing
Committed r285827 (244265@main): <https://commits.webkit.org/244265@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 444294 [details].
<rdar://problem/85426278>