PushManager does not behave correctly when invoked in an ephemeral session. For instance, PushManager.permissionState returns the underlying notification permission state for the origin in a persistent session, while PushManager.subscribe fails with an AbortError. This patch makes PushManager in ephemeral sessions behave as if a user had denied permissions to the origin.
rdar://94296914 (PushManager failures in private browsing should match real user behavior)
Pull request: https://github.com/WebKit/WebKit/pull/1744
Committed 251831@main (0570dfb680f5): <https://commits.webkit.org/251831@main> Reviewed commits have been landed. Closing PR #1744 and removing active labels.