feat(mobile-next): 迁移 Android 一对一语音通话薄适配与入口

复用官方 OpenIMLive 信令与房间，换票改走账号服务 /api/rtc_token；入口仅音频，占线/超时/重复回调与销毁释放由公司层防护。

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

mobile-next/openim_common/lib/src/widgets/chat/chat_toolbox.dart

@@ -38,7 +38,7 @@ class ChatToolBox extends StatelessWidget {
         ToolboxItemInfo(
           text: StrRes.toolboxCall,
           icon: ImageRes.toolboxCall,
-          onTap: () => Permissions.cameraAndMicrophone(onTapCall),
+          onTap: () => Permissions.microphone(onTapCall),
         ),
       ToolboxItemInfo(
         text: StrRes.toolboxFile,