For Data Isolation, we should fix NetworkConnectionToWebProcess::domCookiesForHost to check allowsFirstPartyForCookies
rdar://101981247
Pull request: https://github.com/WebKit/WebKit/pull/6157
Pull request: https://github.com/WebKit/WebKit/pull/6230
Committed 256520@main (903247bccc5b): <https://commits.webkit.org/256520@main> Reviewed commits have been landed. Closing PR #6230 and removing active labels.