Credential validation only applies to credentials as they are removed from the credential store. If asked to validate credentials, we should validate cached credentials too.
<rdar://problem/95254368>
Pull request: https://github.com/WebKit/WebKit/pull/1561
Committed r295612 (251617@main): <https://commits.webkit.org/251617@main> Reviewed commits have been landed. Closing PR #1561 and removing active labels.