feat(call): 支持语音通话邀请弹框显示

- 扩展通话类型支持，同时处理视频和语音通话
- 添加通话类型参数传递到邀请弹框组件
- 根据通话类型动态显示相应的邀请文案
- 优化通话页面中邀请文字的判断逻辑

lib/im/im_manager.dart

@@ -1453,7 +1453,7 @@ class IMManager {
         // 如果解析到通话信息，检查是否需要显示视频通话邀请弹框
         if (callInfo != null && callType != null && callStatus != null) {
           // 只处理视频通话且状态为 missed 或 calling 的消息（新邀请）
-          if (callType == 'video' && (callStatus == 'missed' || callStatus == 'calling')) {
+          if ((callType == 'video' || callType == 'voice') && (callStatus == 'missed' || callStatus == 'calling')) {
             // 获取用户信息
             Map<String, dynamic>? attributes;
             try {

lib/pages/message/video_call_page.dart

@@ -19,12 +19,14 @@ import '../../model/home/marriage_data.dart';
 /// 视频通话页面
 class VideoCallPage extends StatefulWidget {
   final String targetUserId;
+  final String? callType;
   final MarriageData? userData;
   final bool isInitiator; // 是否是发起方
 
   const VideoCallPage({
     super.key,
     required this.targetUserId,
+    this.callType,
     this.userData,
     this.isInitiator = true,
   });
@@ -401,8 +403,7 @@ class _VideoCallPageState extends State<VideoCallPage> {
   Widget _buildCallDuration() {
     // 如果是被呼叫方且未接通，显示邀请文字
     if (!widget.isInitiator && !_isCallConnected) {
-      final callSession = _callController.currentCall.value;
-      final isVideoCall = callSession != null && callSession.callType == CallType.video;
+      final isVideoCall = widget.callType == 'video';
       final inviteText = isVideoCall ? '邀请你视频通话' : '邀请你语音通话';
       
       return Positioned(

lib/widget/message/video_call_invite_dialog.dart

@@ -7,6 +7,7 @@ import 'package:flutter_screenutil/flutter_screenutil.dart';
 class VideoCallInviteDialog extends StatelessWidget {
   final String avatarUrl;
   final String nickName;
+  final String? callType;
   final VoidCallback? onTap; // 点击弹框主体区域（只跳转，不接通）
   final VoidCallback? onAccept; // 点击接通按钮（接通并跳转）
   final VoidCallback? onReject; // 点击挂断按钮（拒绝）
@@ -15,6 +16,7 @@ class VideoCallInviteDialog extends StatelessWidget {
     super.key,
     required this.avatarUrl,
     required this.nickName,
+    this.callType,
     this.onTap,
     this.onAccept,
     this.onReject,
@@ -93,7 +95,7 @@ class VideoCallInviteDialog extends StatelessWidget {
                         SizedBox(height: 4.h),
                         // 邀请文案
                         Text(
-                          '邀请你视频通话',
+                          '邀请你${callType == 'video' ? '视频' : '语音'}通话',
                           style: TextStyle(
                             fontSize: 13.sp,
                             color: Colors.white.withOpacity(0.8),