fix(demo): Remove color-scheme meta tag causing dark input backgrounds

Remove the color-scheme meta tag that was causing form inputs to
display with dark backgrounds when users have dark mode enabled in
their system preferences. Since the demo app doesn't implement dark
mode, inputs should remain light-themed regardless of system settings.

Author: ishansasika

demo/index.html

@@ -13,7 +13,6 @@
     <!-- Primary Meta Tags -->
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="theme-color" content="#3b82f6" />
-    <meta name="color-scheme" content="light dark" />
 
     <!-- Performance & Security -->
     <meta http-equiv="X-UA-Compatible" content="IE=edge" />