feat：设置头像为默认圆形

lib/ui/widgets/avatar.dart

@@ -20,7 +20,9 @@ class Avatar extends TIMUIKitStatelessWidget {
   final V2TimUserStatus? onlineStatus;
   final int? type; // 1 c2c 2 group
   final bool isShowBigWhenClick;
-  final TUISelfInfoViewModel selfInfoViewModel = serviceLocator<TUISelfInfoViewModel>();
+  final bool isCircle; // 是否显示为圆形头像
+  final TUISelfInfoViewModel selfInfoViewModel =
+      serviceLocator<TUISelfInfoViewModel>();
 
   Avatar(
       {Key? key,
@@ -30,6 +32,7 @@ class Avatar extends TIMUIKitStatelessWidget {
       this.isShowBigWhenClick = false,
       this.isFromLocalAsset = false,
       this.borderRadius,
+      this.isCircle = true,
       this.type = 1})
       : super(key: key);
 
@@ -37,18 +40,24 @@ class Avatar extends TIMUIKitStatelessWidget {
     Widget defaultAvatar() {
       if (type == 1) {
         return Image.asset(
-            TencentUtils.checkString(selfInfoViewModel.globalConfig?.defaultAvatarAssetPath) ??
+            TencentUtils.checkString(
+                    selfInfoViewModel.globalConfig?.defaultAvatarAssetPath) ??
                 'images/default_c2c_head.png',
             fit: BoxFit.cover,
             package:
-                selfInfoViewModel.globalConfig?.defaultAvatarAssetPath != null ? null : 'tencent_cloud_chat_uikit');
+                selfInfoViewModel.globalConfig?.defaultAvatarAssetPath != null
+                    ? null
+                    : 'tencent_cloud_chat_uikit');
       } else {
         return Image.asset(
-            TencentUtils.checkString(selfInfoViewModel.globalConfig?.defaultAvatarAssetPath) ??
+            TencentUtils.checkString(
+                    selfInfoViewModel.globalConfig?.defaultAvatarAssetPath) ??
                 'images/default_group_head.png',
             fit: BoxFit.cover,
             package:
-                selfInfoViewModel.globalConfig?.defaultAvatarAssetPath != null ? null : 'tencent_cloud_chat_uikit');
+                selfInfoViewModel.globalConfig?.defaultAvatarAssetPath != null
+                    ? null
+                    : 'tencent_cloud_chat_uikit');
       }
     }
 
@@ -76,19 +85,27 @@ class Avatar extends TIMUIKitStatelessWidget {
     ImageProvider defaultAvatar() {
       if (type == 1) {
         return Image.asset(
-                TencentUtils.checkString(selfInfoViewModel.globalConfig?.defaultAvatarAssetPath) ??
+                TencentUtils.checkString(selfInfoViewModel
+                        .globalConfig?.defaultAvatarAssetPath) ??
                     'images/default_c2c_head.png',
                 fit: BoxFit.cover,
                 package:
-                    selfInfoViewModel.globalConfig?.defaultAvatarAssetPath != null ? null : 'tencent_cloud_chat_uikit')
+                    selfInfoViewModel.globalConfig?.defaultAvatarAssetPath !=
+                            null
+                        ? null
+                        : 'tencent_cloud_chat_uikit')
             .image;
       } else {
         return Image.asset(
-                TencentUtils.checkString(selfInfoViewModel.globalConfig?.defaultAvatarAssetPath) ??
+                TencentUtils.checkString(selfInfoViewModel
+                        .globalConfig?.defaultAvatarAssetPath) ??
                     'images/default_group_head.png',
                 fit: BoxFit.cover,
                 package:
-                    selfInfoViewModel.globalConfig?.defaultAvatarAssetPath != null ? null : 'tencent_cloud_chat_uikit')
+                    selfInfoViewModel.globalConfig?.defaultAvatarAssetPath !=
+                            null
+                        ? null
+                        : 'tencent_cloud_chat_uikit')
             .image;
       }
     }
@@ -109,6 +126,16 @@ class Avatar extends TIMUIKitStatelessWidget {
   Widget tuiBuild(BuildContext context, TUIKitBuildValue value) {
     final TUITheme theme = value.theme;
 
+    // 根据isCircle参数决定borderRadius
+    BorderRadius getAvatarBorderRadius() {
+      if (isCircle) {
+        return BorderRadius.circular(200); // 使用大圆角值来实现圆形效果
+      }
+      return borderRadius ??
+          selfInfoViewModel.globalConfig?.defaultAvatarBorderRadius ??
+          BorderRadius.circular(4.8);
+    }
+
     return Stack(
       fit: StackFit.expand,
       clipBehavior: Clip.none,
@@ -119,24 +146,22 @@ class Avatar extends TIMUIKitStatelessWidget {
               Navigator.of(context).push(
                 PageRouteBuilder(
                   opaque: false, // set to false
-                  pageBuilder: (_, __, ___) => ImageScreen(imageProvider: getImageProvider(), heroTag: faceUrl),
+                  pageBuilder: (_, __, ___) => ImageScreen(
+                      imageProvider: getImageProvider(), heroTag: faceUrl),
                 ),
               );
             },
             child: Hero(
               tag: faceUrl,
               child: ClipRRect(
-                borderRadius: borderRadius ??
-                    selfInfoViewModel.globalConfig?.defaultAvatarBorderRadius ??
-                    BorderRadius.circular(4.8),
+                borderRadius: getAvatarBorderRadius(),
                 child: getImageWidget(context, theme),
               ),
             ),
           ),
         if (!isShowBigWhenClick)
           ClipRRect(
-            borderRadius:
-                borderRadius ?? selfInfoViewModel.globalConfig?.defaultAvatarBorderRadius ?? BorderRadius.circular(4.8),
+            borderRadius: getAvatarBorderRadius(),
             child: getImageWidget(context, theme),
           ),
         if (onlineStatus?.statusType != null && onlineStatus?.statusType != 0)