fix(mobile): 升级 livekit_client 至 2.10.0 以兼容 Dart 3.13 并恢复安卓出包

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

mobile/lib/services/call_service.dart

@@ -190,7 +190,7 @@ class CallService extends ChangeNotifier {
     speakerOn = !speakerOn;
     notifyListeners();
     try {
-      await Hardware.instance.setSpeakerphoneOn(speakerOn);
+      await AudioManager.instance.setSpeakerOutputPreferred(speakerOn);
     } catch (_) {
       speakerOn = !speakerOn;
       notifyListeners();
@@ -369,7 +369,7 @@ class CallService extends ChangeNotifier {
     }
     // 复位免提
     if (speakerOn) {
-      Hardware.instance.setSpeakerphoneOn(false).catchError((_) {});
+      AudioManager.instance.setSpeakerOutputPreferred(false).catchError((_) {});
       speakerOn = false;
     }
     micOn = true;