DR-4798: Have notifications be marked as read only when clicked on instead of after seeing content
Priority: Should Fix
Type: Story
Description:
**Background**
Some users are reporting that they are not seeing all of their notifications because one notification marks all other notifications as read. This is because users mostly focus on the notification tapped on and then return to the notification screen. But other notifications such as mentions may reside on the same page and thus marks notification as read leaving users to miss out on possible important responses, etc.

Let’s change the way we mark notifications as read by only marking them as read once clicked on not seen.