fix: [CMenu] 解决菜单默认展示纵向滚动条的问题

Author: liyuan-meng

src/components/c-menu/index.less

@@ -228,7 +228,7 @@
 .@{menu} {
   position: relative;
   display: inline-block;
-  height: 100%;
+  // height: 100%;
   overflow: visible;
   width: 100%;
   &.@{horizontalHeader} {