Notification should not prevent entering the back/forward cache.
<rdar://problem/56557479>
Created attachment 381750 [details] Patch
Created attachment 381751 [details] Patch
Comment on attachment 381751 [details] Patch r=me
Comment on attachment 381751 [details] Patch Clearing flags on attachment: 381751 Committed r251528: <https://trac.webkit.org/changeset/251528>
All reviewed patches have been landed. Closing bug.