We will fail a message check when scheduling a resource load since the first party for cookies we set is incorrect.
rdar://116894594
Pull request: https://github.com/WebKit/WebKit/pull/19070
Committed 269345@main (a971ac1032e7): <https://commits.webkit.org/269345@main> Reviewed commits have been landed. Closing PR #19070 and removing active labels.