Prevent an origin from finding out that a user denied permission to use the Notifications API unless the origin has requested permission to use that API.
Pull request: https://github.com/WebKit/WebKit/pull/2741
Committed 252969@main (a742d4b71e27): <https://commits.webkit.org/252969@main> Reviewed commits have been landed. Closing PR #2741 and removing active labels.
<rdar://problem/97810058>