How to remove the Selection / Focus shadow

In the entities card, whenever you hover over certain things with your mouse, a focus shadow appears behind it. When you click on it, the shadow remains showing that is the last thing you “pressed” – how do I get rig of this? I’m ok with it appearing when I hover but when I click I don’t want it to remain. Here is an example of this focus shadow under the toggle button after I pressed it to turn it on (the blue halo).
image

Same thing happens when I click various buttons (mute, volume, etc) in the mini-player card.