Fix dark mode bug where toggling the browser pref would apply the scheme...

Fix dark mode bug where toggling the browser pref would apply the scheme independently of app preference

app/views/layouts/application.html.erb

@@ -12,8 +12,7 @@
     
     <script>
       (function() {
-        if (!document.documentElement.classList.contains('dark') && 
-            !document.documentElement.classList.contains('light')) {
+        if (document.documentElement.classList.contains('auto')) {
           if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
             document.documentElement.classList.add('dark');
           } else {
@@ -22,7 +21,7 @@
         }
         
         window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', e => {
-          if (!localStorage.getItem('theme')) {
+          if (!document.documentElement.classList.contains('auto')) {
             document.documentElement.classList.remove('dark', 'light');
             document.documentElement.classList.add(e.matches ? 'dark' : 'light');
           }