[MVC] Counter dark mode hover/focus styles
The `<counter>` component in the super sidebar does not have styles for `:hover`/`:focus`/`:active` states in dark mode. | Default | Hover | | ------ | ----- | | ![127.0.0.1_3000_search](/uploads/a09b081d056d9c8fbc54a1d944d9809c/127.0.0.1_3000_search.png) | ![127.0.0.1_3000_search__1_](/uploads/64f08ddf45ed5239763ee8005abc439e/127.0.0.1_3000_search__1_.png) | Figma design: ![image](/uploads/cc763bd33c3d4693f49cf79c6dc4bf53/image.png) https://www.figma.com/file/kAAMkIqKPE4rRYo1JQIheI/Navigation-Redesign?node-id=3206%3A180669&t=coKLpAca8nhFPXAp-4
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