fix: less compile bug (#3119)

* fix: css(:not(.ant-dropdown-menu)) use in global

* fix: use extra css-class instead of child combinator

* fix: use * to overwrite

src/components/HeaderDropdown/index.less

 @import '~antd/lib/style/themes/default.less';
 
-.container > *:global(:not(.ant-dropdown-menu)) {
+.container > * {
   background-color: #fff;
   box-shadow: @shadow-1-down;
   border-radius: 4px;