fix(dark-mode): indicate dark color-scheme for native browser controls (#10844)

Co-authored-by: Shikha Saboo Lakhotia <102152915+cka121@users.noreply.github.com>

Author: yogeshwaran-c

src/style/_dark-mode.scss

@@ -85,6 +85,7 @@ $opblock_colors: (
 );
 
 html.dark-mode {
+  color-scheme: dark;
   background: $neutral-98;
 
   .swagger-ui {