fix: iOS volume support bug

fix #1011

src/js/utils/platform-tests.ts

@@ -23,7 +23,18 @@ export const hasVolumeSupportAsync = async (
   if (!mediaEl) return false;
   const prevVolume = mediaEl.volume;
   mediaEl.volume = prevVolume / 2 + 0.1;
-  await delay(0);
+
+  // iOS Safari doesn't allow setting volume programmatically but it will
+  // change the volume property for a short time before reverting.
+  // On heavy sites this can take a while to revert so we need to wait at least
+  // 100ms to make sure the volume has not changed.
+  // If there is no change sooner, return false early to minimize UI jank.
+  for (let i = 0; i < 9; i++) {
+    await delay(10);
+    if (mediaEl.volume === prevVolume) return false;
+  }
+
+  await delay(10);
   return mediaEl.volume !== prevVolume;
 };