CN-1448 fix: 实体搜索界面增加相关实体过滤功能

src/assets/css/font/iconfont.css

@@ -1,8 +1,8 @@
 @font-face {
   font-family: "cn-icon"; /* Project id 2614877 */
-  src: url('iconfont.woff2?t=1698229141457') format('woff2'),
-       url('iconfont.woff?t=1698229141457') format('woff'),
-       url('iconfont.ttf?t=1698229141457') format('truetype');
+  src: url('iconfont.woff2?t=1699411209748') format('woff2'),
+       url('iconfont.woff?t=1699411209748') format('woff'),
+       url('iconfont.ttf?t=1699411209748') format('truetype');
 }
 
 .cn-icon {
@@ -13,6 +13,10 @@
   -moz-osx-font-smoothing: grayscale;
 }
 
+.cn-icon-related:before {
+  content: "\e640";
+}
+
 .cn-icon-indicator-match:before {
   content: "\e80c";
 }