Implement `Iterator.prototype.reduce`
Pull request: https://github.com/WebKit/WebKit/pull/33673
Committed 283697@main (84cc6561cbc8): <https://commits.webkit.org/283697@main> Reviewed commits have been landed. Closing PR #33673 and removing active labels.
<rdar://problem/136064316>
*** Bug 279667 has been marked as a duplicate of this bug. ***