fix(音频播放): 修复iOS设备在页面隐藏时音频播放逻辑问题

优化音频播放逻辑，当页面隐藏时不再延迟播放。同时修正自动播放下一首时的立即播放条件判断。

index.html

@@ -967,6 +967,8 @@
             const playAudioWithFallback = (audio, options = {}) => {
                 if (!audio) return;
                 const { deferOnIOS = false } = options;
+                const isHidden = typeof document !== 'undefined' && document.hidden;
+                const shouldDefer = deferOnIOS && IS_IOS && !isHidden;
                 const doPlay = () => {
                     const playPromise = audio.play();
                     if (playPromise && typeof playPromise.catch === 'function') {
@@ -978,7 +980,7 @@
                     }
                 };
 
-                if (deferOnIOS && IS_IOS) {
+                if (shouldDefer) {
                     const onCanPlay = () => {
                         audio.removeEventListener('canplay', onCanPlay);
                         doPlay();
@@ -1221,7 +1223,9 @@
                 const triggerAutoNext = () => {
                     if (autoAdvanceLockRef.current) return;
                     autoAdvanceLockRef.current = true;
-                    playNext(true, { immediate: !IS_IOS, deferOnIOS: IS_IOS });
+                    const isHidden = typeof document !== 'undefined' && document.hidden;
+                    const immediate = IS_IOS || isHidden;
+                    playNext(true, { immediate, deferOnIOS: IS_IOS });
                 };
 
                 const isNearEnd = () => {
@@ -1377,7 +1381,9 @@
                 }
 
                 if (auto) {
-                    autoNextPendingRef.current = true;
+                    autoNextPendingRef.current = !options.immediate;
+                } else {
+                    autoNextPendingRef.current = false;
                 }
 
                 let nextIdx;