[Feat 0000] 修改Header展示逻辑

src/layouts/default/header/index.vue

@@ -46,7 +46,7 @@
     <!-- action  -->
     <div :class="`${prefixCls}-action`">
       <div class="right-position">
-        <UserDropDown v-if="!showUserDropdown" :theme="getHeaderTheme" />
+        <UserDropDown v-if="showUserDropdown" :theme="getHeaderTheme" />
       </div>
     </div>
   </Header>