refactor(translation): 优化ASR服务初始化逻辑并支持通话模式

- 移除未使用的ASR支持语言列表初始化代码
- 在通话模式中初始化AST服务并配置支持语言
- 根据当前模式动态调整ASR支持语言列表
- 统一先停止旧识别再进行重新初始化

lib/modules/translation/controllers/translation_controller.dart

@@ -588,10 +588,10 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
       await _translationService.initialize();
 
       // 初始化 ASR 服务时，明确指定需要支持的语言
-      final List<String> asrSupportedLanguages = [
+      // final List<String> asrSupportedLanguages = [
-        sourceLanguageCode.value,
+      //   sourceLanguageCode.value,
-        targetLanguageCode.value
+      //   targetLanguageCode.value
-      ];
+      // ];
       //Logger.info('2初始化ASR服务，支持语言: $asrSupportedLanguages');
 
       //await _asrService.initialize(supportedLanguages: asrSupportedLanguages);
@@ -811,6 +811,12 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
 
   /// 配置通话模式
   Future<void> _configureCallMode() async {
+    final List<String> callModeLanguages = [
+      sourceLanguageCode.value,
+      targetLanguageCode.value
+    ];
+    Logger.info('1初始化AST服务，支持语言: $callModeLanguages'); //ast=asr+translate
+    await _astService.initialize(supportedLanguages: callModeLanguages);
     bleManager.openA2DPDecoder();
     _audioSourceType = true;
     isTtsEnabled.value = false;
@@ -1456,16 +1462,26 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
     }
   }
 
-  /// 重新初始化ASR服务以支持新的语言
+  /// 重新初始化ASR服务
   Future<void> _reinitializeAsrService() async {
     try {
+      //1.统一先停止旧识别
       await stopRecognition();
 
-      final List<String> asrSupportedLanguages = [
+      late final List<String> asrSupportedLanguages;
+
+      if (currentMode.value == 'audioVideo') {
+        asrSupportedLanguages = [sourceLanguageCode.value];
+      } else {
+        asrSupportedLanguages = [
           sourceLanguageCode.value,
           targetLanguageCode.value
         ];
+      }
 
+      if (currentMode.value == "call") {
+        _initializeCallModeTranslationService();
+      } else {
         Logger.info('重新初始化ASR服务，支持语言: $asrSupportedLanguages');
 
         await _asrService.initialize(supportedLanguages: asrSupportedLanguages);
@@ -1474,9 +1490,6 @@ class TranslationController extends GetxController with WidgetsBindingObserver {
         _recognitionSubscription?.cancel();
         _recognitionSubscription =
             recognitionStream.listen(_handleRecognitionEvent);
-
-      if (currentMode.value == "call") {
-        _initializeCallModeTranslationService();
       }
       Logger.info('ASR服务重新初始化成功');
     } catch (e) {