updated streaming functionality to load notifications into a queue (if currently on notitications page) and to display TimelineQueueButtonHeader with outstanding notification count. (if not on notifications page, it behaves as normal, adding/updating notification state). Max 40 are saved to queuedNotifications state and all are tallied into the totalQueuedNotificationsCount state. On click of TimelineQueueButtonHeader it dequeues the queuedNotifications and loads on page if <= max, otherwise it refreshes the page and shows latest 20 (default count) and clears/resets the state for queuedNotifications and totalQueuedNotificationsCount.
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