Insights: move 'All insights' dashboard to a separate tab
Created by: AlicjaSuska
Details
'All insights' conceptually is not a dashboard - user cannot influence what they see there, it's just a list of all the insights they have access to that is automatically generated.
As we're adding the ability to select dashboard in creation and editing UIs (#30603), it's a good time to move 'all insights' to a separate tab. We've decided not to show 'all insights' as a default dashboard for every insight.
Scope
- move 'All insights' dashboard to a separate tab
- remove 'add or remove insights' button (currently it is disabled for 'All insights' page)
- add empty states for 'Dashboards' and 'All insights' tab