feat: enhanced notifications and toolbar hover states (#3032)

* fix: button hover state and overlay colors in tmtv

* fix: styles for notificaionts

extensions/default/src/Toolbar/ToolbarDivider.tsx

@@ -2,6 +2,6 @@ import React from 'react';
 
 export default function ToolbarDivider() {
   return (
-    <span className="self-center w-1 h-8 mx-2 border-l border-common-dark" />
+    <span className="self-center w-4 h-8 mx-2 border-l border-common-dark" />
   );
 }