Browser checks dashboard - Iteration 3

[VikaCep]

Improvements to the browser checks dashboard:

• Adds explore links in web vitals panels so users can see how the number is calculated by getting access to the query in Explore.
  

• Removes the unit in the CLS column of the web vitals by url table
  

Part of #866
Addresses #918 (review)

[ckbedwell]

This makes a big difference so thank you for turning it round so fast ⚡

In terms of the UI, my preference would be adapting the web vital gauge so it is more in line with the other panels; so the explore link is in the three-dot hover menu on the panel. I found it a little jarring that the pattern is different to all the other panels on the page.

It shouldn't be too difficult to bring in <PanelChrome /> from @grafana/ui so most of the behaviour is baked in by default in that component but I was looking at src/scenes/ExplorablePanel and wondering if this was usable with a custom component rather than having to provide a pluginId?

Lastly, the Explore link should stay in the same tab and not open a new one with target=_blank.

[VikaCep]

Thanks for your feedback @ckbedwell! I went ahead and used the PanelChrome component as you suggested. I took a look at ExplorablePanel but it doesn't seem that straightforward to adapt it to support custom scene objects, and PanelChrome has all the behavior we need so I opted for that one, but let me know what you think 🙏

[ckbedwell]

LGTM 💪