fix(Header): 添加点击事件以切换个人资料下拉菜单状态

在Header组件中，为个人资料下拉菜单添加了点击事件，使得点击菜单时可以切换其显示状态，提升用户体验。

@@ -51,7 +51,7 @@
               </button>
               </button>
 
 
               <!-- Profile Dropdown -->
               <!-- Profile Dropdown -->
-              <div v-if="isProfileDropdownOpen" class="absolute right-0 mt-2 w-48 py-2 bg-white rounded-md shadow-lg backdrop-blur-xl bg-white/90 z-20">
+              <div v-if="isProfileDropdownOpen" @click="isProfileDropdownOpen = !isProfileDropdownOpen" class="absolute right-0 mt-2 w-48 py-2 bg-white rounded-md shadow-lg backdrop-blur-xl bg-white/90 z-20">
                 <router-link to="/profile" class="block px-4 py-2 text-sm text-gray-700 hover:bg-green-50 hover:text-green-500">
                 <router-link to="/profile" class="block px-4 py-2 text-sm text-gray-700 hover:bg-green-50 hover:text-green-500">
                   个人资料
                   个人资料
                 </router-link>
                 </router-link>