update changelog

Co-authored-by: Lea Verou <lea@verou.me>

docs/assets/scripts/theme-picker.js

@@ -4,12 +4,9 @@ export function domChange(fn, { behavior = 'smooth' } = {}) {
     document.startViewTransition && !window.matchMedia('(prefers-reduced-motion: reduce)').matches;
 
   if (canUseViewTransitions && behavior === 'smooth') {
-    const transition = document.startViewTransition(() => {
-      fn(true);
-      // Wait a brief delay before finishing the transition to prevent jumpiness
-      return new Promise(resolve => setTimeout(resolve, 200));
-    });
-    return transition;
+    document.startViewTransition(fn);
+  } else {
+    fn(true);
   }
 }