feat(qq_music): 添加自动暂停音乐方法以简化暂停逻辑

新增 autopauseMusic 方法，该方法在 QQ 音乐插件、服务层和控制器中实现。它封装了检查播放状态并暂停的逻辑，替换了原先需要先同步播放信息再手动暂停的多步操作，使代码更简洁并减少潜在的错误。

lib/data/services/qq_music.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:ffi';
 import 'package:get/get.dart';
 import 'package:qq_music/qq_music.dart';
 import '../models/song_model.dart';
@@ -266,6 +267,19 @@ class QqMusicService extends GetxService {
     }
   }
 
+  /// 自动暂停音乐
+  Future<bool> autopauseMusic() async {
+    try {
+      final result = await _qqMusic.autopauseMusic();
+      if (result['success'] == true) {
+        isPlaying.value = false;
+      }
+      return result['success'] == true;
+    } catch (e) {
+      return false;
+    }
+  }
+
   /// 继续播放
   Future<Map<String, dynamic>> resumeMusic() async {
     try {

lib/modules/translation/controllers/translation_controller.dart

@@ -766,10 +766,8 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
       }
 
       if (!_isContinueQqMusicPlaying) {
-        await _qqMusicManager.syncCurrentPlayInfo();
-        if (_qqMusicManager.isPlaying.value == true) {
+        if (await _qqMusicManager.autopauseMusic()) {
           _isContinueQqMusicPlaying = true;
-          await _qqMusicManager.pauseMusic();
         }
       }
     } catch (e) {

local_plugins/qq_music/android/src/main/kotlin/com/yunqiinnovation/qq_music/QqMusicPlugin.kt

@@ -141,6 +141,14 @@ class QqMusicPlugin: FlutterPlugin, MethodCallHandler, ActivityAware {
           )
         }
       }
+      "autopauseMusic" -> {
+        qqMusicSingleton.autopauseMusic { kotlinResult ->
+          kotlinResult.fold(
+            onSuccess = { result.success(mapOf("success" to true)) },
+            onFailure = { error -> result.error("PAUSE_FAILED", error.message, null) }
+          )
+        }
+      }
       "resumeMusic" -> {
         qqMusicSingleton.resumeMusic { kotlinResult ->
           kotlinResult.fold(

local_plugins/qq_music/lib/qq_music.dart

@@ -81,6 +81,16 @@ class QqMusic {
     }
   }
 
+  /// 自动暂停音乐
+  Future<Map<String, dynamic>> autopauseMusic() async {
+    try {
+      final result = await _methodChannel.invokeMethod('autopauseMusic');
+      return Map<String, dynamic>.from(result);
+    } on PlatformException catch (e) {
+      return {'success': false, 'error': e.message ?? '自动暂停失败', 'code': e.code};
+    }
+  }
+
   /// 恢复播放
   Future<Map<String, dynamic>> resumeMusic() async {
     try {