Deployment Pane: selector in deployment view

I'm testing four different .bicepparam files that are based on the same underlying configuration. It would be great if the deployment pane allowed me to select between the param files in the pane. This could be scoped to .bicepparam files that have the same using statement.

As it's currently implemented, you need to select the tab that hosts the pane. There's a bit of UI friction. I have my code in the left pane and all of the deploy panes in the right pane. If the deploy pane is selected, and I go open another file, it opens in the right pane.

Start with the deployment pane and its current tab-host selection behavior. Review how .bicepparam files sharing a using statement are identified, then define done as selecting among those files directly in the pane without switching tabs.

Written by the indexing model from the issue text.