Code Insights: Remove org fallback in case if dashboard doesn't have proper owner name
Created by: vovakulikov
Closes https://github.com/sourcegraph/sourcegraph/issues/28579
In the new GQL (enabled by default) we change the concept around the dashboard owner. It's funny to say but we don't have a simple way to provide a badge with the owner name next to a picked dashboard in the dashboard select while we still support setting API. This PR just removes fallback on org ID in case if we don't have a proper owner name (which we don't have in GQL API)