Summary:
See <https://discourse.phabricator-community.org/t/desktop-only-notifications-mode-is-broken/1234>. Ref T13102. The "Desktop Only" mode for notifications currently shows both desktop and web notifications.
In fact, `JX.Notification` currently has no ability to render notifications as desktop-only. Make this work.
Note that many of the variables and parameters here, including `showAnyNotification`, `web_ready`, and `desktop_ready`, are named in an incorrect or misleading way. However, the new behavior appears to be correct.
Test Plan:
- Emitted test notifications in "No Notifications", "Web Only", "Web and Desktop", and "Desktop" modes.
- Saw appropriate notifications appear in the UI.
Maniphest Tasks: T13102
Differential Revision: https://secure.phabricator.com/D19233
dbc72a05bc