Using theme-light mixin

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/switch/switch.module.scss

@@ -108,7 +108,7 @@
   }
 }
 
-:global(.theme-light) {
+@include theme-light {
   .Switch {
     --thumb-color-highlight: hsl(0 0% 0% / 25%);
 
@@ -118,4 +118,4 @@
       }
     }
   }
-}
+}