Description

This PR makes UI/UX enhancements on topics EE alongside enabling interlinking to topics tax tree.

• Hovering over the domain circle should show the info box.
• Make domains or small circles clickable and highlight rows that have the same domains.
• Use same circle UI for “Observed-by context domains:”
• Internal link from Topics EE to Taxonomy tree.
• Remove the topic from the top of the node.
• Do not connect lines by default, connect as the user travels through nodes.
• A website can have multiple topics, add such examples in the explorable explanation.

Relevant Technical Choices

Testing Instructions

• Open PSAT, navigate the topics panel, and open explorable explanations.
  The animation should start. After a few visits, pause it, and now hover over any circle. The info box should appear and remain there.
• Now click on the small circles, it should highlight the table cells for that circle's value.
• In the table click on the topic name, it should open the taxonomy tree in an expanded view.
• Now come navigate back to EE, it should be the same as navigated earlier.

Additional Information:

Screenshot/Screencast

Checklist

• I have thoroughly tested this code to the best of my abilities.
• I have reviewed the code myself before requesting a review.
• This code is covered by unit tests to verify that it works as intended.
• The QA of this PR is done by a member of the QA team (to be checked by QA).

Fixes #856