The webpushd sandbox on Mac should only allow essential operations: talking to the push service, waking up processes to handle pushes, and persisting information in PushDatabase.
<rdar://87508919>
Pull request: https://github.com/WebKit/WebKit/pull/519
Committed r293920 (250367@main): <https://commits.webkit.org/250367@main> Reviewed commits have been landed. Closing PR #519 and removing active labels.