[JSC] Handle syntactic production for `#x in expr` correctly
Created attachment 439016 [details] Patch
Comment on attachment 439016 [details] Patch r=me
Committed r282968 (242058@main): <https://commits.webkit.org/242058@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 439016 [details].
<rdar://problem/83454219>