Frontend: (DAG) Add Callout for node click interaction
Issue for part 1 discussed here: #249135 (comment 423586972)
The button in the popover is the primary small button.
- For making the click interaction more discoverable, we can show a "tip" popover that only shows up once for the users with an existing DAG visualization (users who use :needs keywords) or for new users who have just started using :needs. Clicking "Got it!" dismisses the popover forever.
- We want this pop-up to be open when the user opens the graph, so they see it before they hover over any of the nodes. For the anchor, the top node in the second level should work. We need to make sure it's always visible on most common screen sizes.
Edited by Laura Montemayor