优化 微调“有新消息”提示的样式

components/uni-im-msg-list/uni-im-msg-list.vue

@@ -742,13 +742,13 @@
     display: flex;
     flex-direction: row;
     align-items: start;
-    right: 18px;
+    right: 40px;
     bottom: 10px;
     font-size: 12px;
     background-color: white;
     color: #007fff;
     padding: 5px 8px 5px 5px;
-    border-radius: 15px 0 0 15px;
+    border-radius: 15px 15px 15px 15px;
     /* #ifdef H5 */
     pointer-events: auto;
     cursor: pointer;