fix(评论组件): 修复管理员标识逻辑和默认值问题

移除CWDComments中adminBadge的默认值'博主'，仅在CommentItem中当adminBadge存在时才显示管理员标识

widget/src/components/CommentItem.js

@@ -30,10 +30,10 @@ export class CommentItem extends Component {
     this.childCommentItems = []; // 缓存嵌套回复的 CommentItem 实例
   }
 
-  render() {
+		render() {
     const { comment, isReply, adminEmail, adminBadge } = this.props;
     const isReplying = this.props.replyingTo === comment.id;
-    const isAdmin = adminEmail && comment.email === adminEmail;
+    const isAdmin = adminEmail && adminBadge && comment.email === adminEmail;
 
     const root = this.createElement('div', {
       className: `cwd-comment-item ${isReply ? 'cwd-comment-reply' : ''}`,

widget/src/core/CWDComments.js

@@ -289,7 +289,7 @@ export class CWDComments {
 				replyError: state.replyError,
 				submitting: state.submitting,
 				adminEmail: this.config.adminEmail,
-				adminBadge: this.config.adminBadge || '博主',
+				adminBadge: this.config.adminBadge,
 				onRetry: () => this.store.loadComments(),
 				onReply: (commentId) => this.store.startReply(commentId),
 				onSubmitReply: (commentId) => this.store.submitReply(commentId),