Code Insights: Fix focus management insight card problems

Created by: vovakulikov

This PR fixes two small problems with focus management on the dashboard page

1. Add autofocus for the title field in the drill-down insight creation flow
2. Add chart tooltip appearance when link chart dot is focused.

Before

https://user-images.githubusercontent.com/18492575/130803280-539fb9ca-bf3d-493f-bbb4-fc9381d3a5ef.mov

https://user-images.githubusercontent.com/18492575/130804417-f05c7fe0-0fbd-4be7-a644-54d37ad97a8c.mov

After

https://user-images.githubusercontent.com/18492575/130803129-3d98a307-1656-43ec-a306-da0cd022ada7.mov

https://user-images.githubusercontent.com/18492575/130804379-dacebcba-b221-410c-a6a5-951a7930fc8f.mov