feat:修复朋友圈详情页刷新；修复私聊；朋友圈操作

src/components/chat-item/chat-item.vue

@@ -113,7 +113,7 @@
     align-items: center;
     background-color: $im-bg;
     white-space: nowrap;
-    border-bottom: 1px solid $im-border;
+    border-top: 1px solid $im-border;
 
     &:hover {
       background-color: $im-bg-active;