Window named getter behaves incorrectly in some cases when there are duplicate frame names.
Pull request: https://github.com/WebKit/WebKit/pull/14988
Committed 265211@main (d3e11a7a1e59): <https://commits.webkit.org/265211@main> Reviewed commits have been landed. Closing PR #14988 and removing active labels.
<rdar://problem/110864556>