In https://bugs.webkit.org/show_bug.cgi?id=260100 we added additional CSP validation for AppSSO meant for Subframe initiated sessions, but it's applied to all.
rdar://118121639
Pull request: https://github.com/WebKit/WebKit/pull/20194
Committed 270422@main (9e08e9d30f55): <https://commits.webkit.org/270422@main> Reviewed commits have been landed. Closing PR #20194 and removing active labels.