Trust UI should better differentiate selected and tabbed

[karthiknadig]

Testing #172101

Here, workspace is trusted (so the trusted block is "selected"), I tabbed to the block to untrust it. They look the same. My screen size is small, the button was cut-off it was confusing for a bit. The "selected" block probably should have some different visual indication.

Here is the reverse scenario, the workspace is untrusted and I tabbed on the block to trust it:

[sbatten]

I believe this is a theme issue with the new Dark+ V2

[daviddossett]

@sbatten I'm seeing this with any theme:

CleanShot.2023-01-31.at.11.28.53.mp4

[sbatten]

@daviddossett GitHub Light Theme