An array keyPath should yield an array key.
Pull request: https://github.com/WebKit/WebKit/pull/14269
*** Bug 247613 has been marked as a duplicate of this bug. ***
Committed 264479@main (54a7b93842dd): <https://commits.webkit.org/264479@main> Reviewed commits have been landed. Closing PR #14269 and removing active labels.
<rdar://problem/109781812>