音频恢复播放指令中包含播放速率参数时，导致播放错乱的问题

lib/data/repositories/message/audio_player_handler.dart

@@ -41,7 +41,7 @@ class AudioPauseHandler extends MessageHandler {
 class AudioResumeHandler extends MessageHandler {
   @override
   Future<dynamic> handleMessage(dynamic params) async {
-    final playRate = (params['playRate'] as num?)?.toDouble() ?? 1.0;
+    double? playRate = (params['playRate'] as num?)?.toDouble();
     return await getIt.get<PlayerService>().resumeAudio(playRate);
   }
 }

lib/services/player_service.dart

@@ -64,7 +64,7 @@ class PlayerService {
     _playId = playId;
 
     // 播放速度
-    await _player!.setSpeed(playRate);
+    _player!.setSpeed(playRate);
 
     await _player!.startPlayer(
       fromURI: url,
@@ -119,7 +119,9 @@ class PlayerService {
     }
 
     if (playRate != null) {
-      await _player!.setSpeed(playRate);
+      _player!.setSpeed(playRate);
+      // 设置速度之后，会自动恢复播放
+      return true;
     }
 
     await _player!.resumePlayer();